History.md

   1 [4.2.1 / 2018-08-07](https://github.com/jakubpawlowicz/clean-css/compare/v4.2.0...v4.2.1)
   2 ==================
   3
   4 * Fixes giving `breakWith` option via a string.
   5
   6 [4.2.0 / 2018-08-02](https://github.com/jakubpawlowicz/clean-css/compare/4.1...v4.2.0)
   7 ==================
   8
   9 * Adds `process` method for compatibility with optimize-css-assets-webpack-plugin.
  10 * Fixed issue [#861](https://github.com/jakubpawlowicz/clean-css/issues/861) - new `transition` property optimizer.
  11 * Fixed issue [#895](https://github.com/jakubpawlowicz/clean-css/issues/895) - ignoring specific styles.
  12 * Fixed issue [#947](https://github.com/jakubpawlowicz/clean-css/issues/947) - selector based filtering.
  13 * Fixed issue [#964](https://github.com/jakubpawlowicz/clean-css/issues/964) - adds configurable line breaks.
  14 * Fixed issue [#986](https://github.com/jakubpawlowicz/clean-css/issues/986) - level 2 optimizations and CSS 4 colors.
  15 * Fixed issue [#1000](https://github.com/jakubpawlowicz/clean-css/issues/1000) - carriage return handling in tokenizer.
  16 * Fixed issue [#1038](https://github.com/jakubpawlowicz/clean-css/issues/1038) - `font-variation-settings` quoting.
  17 * Fixes ReDOS vulnerabilities in validator code.
  18
  19 [4.1.11 / 2018-03-06](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.10...v4.1.11)
  20 ==================
  21
  22 * Backports fixes to ReDOS vulnerabilities in validator code.
  23
  24 [4.1.10 / 2018-03-05](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.9...v4.1.10)
  25 ==================
  26
  27 * Fixed issue [#988](https://github.com/jakubpawlowicz/clean-css/issues/988) - edge case in dropping default animation-duration.
  28 * Fixed issue [#989](https://github.com/jakubpawlowicz/clean-css/issues/989) - edge case in removing unused at rules.
  29 * Fixed issue [#1001](https://github.com/jakubpawlowicz/clean-css/issues/1001) - corrupted tokenizer state.
  30 * Fixed issue [#1006](https://github.com/jakubpawlowicz/clean-css/issues/1006) - edge case in handling invalid source maps.
  31 * Fixed issue [#1008](https://github.com/jakubpawlowicz/clean-css/issues/1008) - edge case in breaking up `font` shorthand.
  32
  33 [4.1.9 / 2017-09-19](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.8...v4.1.9)
  34 ==================
  35
  36 * Fixed issue [#971](https://github.com/jakubpawlowicz/clean-css/issues/971) - edge case in removing unused at rules.
  37
  38 [4.1.8 / 2017-09-02](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.7...v4.1.8)
  39 ==================
  40
  41 * Fixed issue [#959](https://github.com/jakubpawlowicz/clean-css/issues/959) - regression in shortening long hex values.
  42 * Fixed issue [#960](https://github.com/jakubpawlowicz/clean-css/issues/960) - better explanation of `efficiency` stat.
  43 * Fixed issue [#965](https://github.com/jakubpawlowicz/clean-css/issues/965) - edge case in parsing comment endings.
  44 * Fixed issue [#966](https://github.com/jakubpawlowicz/clean-css/issues/966) - remote `@import`s referenced from local ones.
  45
  46 [4.1.7 / 2017-07-14](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.6...v4.1.7)
  47 ==================
  48
  49 * Fixed issue [#957](https://github.com/jakubpawlowicz/clean-css/issues/957) - `0%` minification of `width` property.
  50
  51 [4.1.6 / 2017-07-08](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.5...v4.1.6)
  52 ==================
  53
  54 * Fixed issue [#887](https://github.com/jakubpawlowicz/clean-css/issues/887) - edge case in serializing comments.
  55 * Fixed issue [#953](https://github.com/jakubpawlowicz/clean-css/issues/953) - beautify breaks attribute selectors.
  56
  57 [4.1.5 / 2017-06-29](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.4...v4.1.5)
  58 ==================
  59
  60 * Fixed issue [#945](https://github.com/jakubpawlowicz/clean-css/issues/945) - hex RGBA colors in IE filters.
  61 * Fixed issue [#952](https://github.com/jakubpawlowicz/clean-css/issues/952) - parsing `@page` according to CSS3 spec.
  62
  63 [4.1.4 / 2017-06-14](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.3...v4.1.4)
  64 ==================
  65
  66 * Fixed issue [#950](https://github.com/jakubpawlowicz/clean-css/issues/950) - bug in removing unused `@font-face` rules.
  67
  68 [4.1.3 / 2017-05-18](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.2...v4.1.3)
  69 ==================
  70
  71 * Fixed issue [#946](https://github.com/jakubpawlowicz/clean-css/issues/946) - tokenizing `-ms-grid-columns` repeat syntax.
  72
  73 [4.1.2 / 2017-05-10](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.1...v4.1.2)
  74 ==================
  75
  76 * Fixed issue [#939](https://github.com/jakubpawlowicz/clean-css/issues/939) - semicolon after `@apply` at rule.
  77 * Fixed issue [#940](https://github.com/jakubpawlowicz/clean-css/issues/940) - handling more `font` keywords.
  78 * Fixed issue [#941](https://github.com/jakubpawlowicz/clean-css/issues/941) - breaking up vendor prefixed `animation`.
  79
  80 [4.1.1 / 2017-05-08](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.0...v4.1.1)
  81 ==================
  82
  83 * Fixed issue [#938](https://github.com/jakubpawlowicz/clean-css/issues/938) - removing unused at-rules with `!important`.
  84
  85 [4.1.0 / 2017-05-07](https://github.com/jakubpawlowicz/clean-css/compare/4.0...v4.1.0)
  86 ==================
  87
  88 * Improves longhand-into-shorthand merging mechanism in complex cases as with `border-*` shorthands.
  89 * Fixed issue [#254](https://github.com/jakubpawlowicz/clean-css/issues/254) - adds `font` property optimizer.
  90 * Fixed issue [#525](https://github.com/jakubpawlowicz/clean-css/issues/525) - restores `inherit`-based merging.
  91 * Fixed issue [#755](https://github.com/jakubpawlowicz/clean-css/issues/755) - adds custom handling of remote requests.
  92 * Fixed issue [#860](https://github.com/jakubpawlowicz/clean-css/issues/860) - adds `animation` property optimizer.
  93 * Fixed issue [#862](https://github.com/jakubpawlowicz/clean-css/issues/862) - allows removing unused at rules.
  94 * Fixed issue [#886](https://github.com/jakubpawlowicz/clean-css/issues/886) - better multi pseudo class / element merging.
  95 * Fixed issue [#890](https://github.com/jakubpawlowicz/clean-css/issues/890) - adds toggle to disable empty tokens removal.
  96 * Fixed issue [#893](https://github.com/jakubpawlowicz/clean-css/issues/893) - `inline: false` as alias to `inline: 'none'`.
  97 * Fixed issue [#905](https://github.com/jakubpawlowicz/clean-css/issues/905) - allows disabling selector sorting.
  98 * Fixed issue [#906](https://github.com/jakubpawlowicz/clean-css/issues/906) - improves usability of web UI settings.
  99 * Fixed issue [#908](https://github.com/jakubpawlowicz/clean-css/issues/908) - improved `minify` method signature.
 100 * Fixed issue [#916](https://github.com/jakubpawlowicz/clean-css/issues/916) - maximum number of merged selectors.
 101 * Fixed issue [#920](https://github.com/jakubpawlowicz/clean-css/issues/920) - allows skipping certain properties in level 2 optimizations.
 102 * Fixed issue [#934](https://github.com/jakubpawlowicz/clean-css/issues/934) - smarter longhand into shorthand merging.
 103
 104 [4.0.13 / 2017-05-10](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.12...v4.0.13)
 105 ==================
 106
 107 * Backports [#939](https://github.com/jakubpawlowicz/clean-css/issues/939) - semicolon after `@apply` at rule.
 108
 109 [4.0.12 / 2017-04-12](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.11...v4.0.12)
 110 ==================
 111
 112 * Fixed issue [#930](https://github.com/jakubpawlowicz/clean-css/issues/930) - regression in tidying selectors.
 113
 114 [4.0.11 / 2017-04-04](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.10...v4.0.11)
 115 ==================
 116
 117 * Fixed issue [#924](https://github.com/jakubpawlowicz/clean-css/issues/924) - `hsl` zero percent eager optimization.
 118
 119 [4.0.10 / 2017-03-22](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.9...v4.0.10)
 120 ==================
 121
 122 * Fixed issue [#917](https://github.com/jakubpawlowicz/clean-css/issues/917) - prevents grid area unquoting.
 123 * Backported [#916](https://github.com/jakubpawlowicz/clean-css/issues/916) - maximum number of merged selectors.
 124 * Refixed issue [#556](https://github.com/jakubpawlowicz/clean-css/issues/556) - IE backslash hacks.
 125
 126 [4.0.9 / 2017-03-15](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.8...v4.0.9)
 127 ==================
 128
 129 * Fixed issue [#902](https://github.com/jakubpawlowicz/clean-css/issues/902) - case insensitive attribute matchers.
 130 * Fixed issue [#903](https://github.com/jakubpawlowicz/clean-css/issues/903) - web UI and source maps.
 131 * Fixed issue [#907](https://github.com/jakubpawlowicz/clean-css/issues/907) - space after closing brace in `@supports`.
 132 * Fixed issue [#910](https://github.com/jakubpawlowicz/clean-css/issues/910) - too aggressive precision optimizations.
 133
 134 [4.0.8 / 2017-02-22](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.7...v4.0.8)
 135 ==================
 136
 137 * Fixes edge case in remote stylesheet fetching.
 138 * Fixed issue [#899](https://github.com/jakubpawlowicz/clean-css/issues/899) - regression in optimizing pseudo class arguments.
 139
 140 [4.0.7 / 2017-02-14](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.6...v4.0.7)
 141 ==================
 142
 143 * Fixed issue [#891](https://github.com/jakubpawlowicz/clean-css/issues/891) - merging vendor-prefixed pseudo-classes.
 144
 145 [4.0.6 / 2017-02-10](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.5...v4.0.6)
 146 ==================
 147
 148 * Fixed issue [#885](https://github.com/jakubpawlowicz/clean-css/issues/885) - unquoting `font-feature-settings`.
 149
 150 [4.0.5 / 2017-02-07](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.4...v4.0.5)
 151 ==================
 152
 153 * Fixed issue [#884](https://github.com/jakubpawlowicz/clean-css/issues/884) - handling absolute paths on Windows.
 154 * Fixed issue [#881](https://github.com/jakubpawlowicz/clean-css/issues/881) - incorrect `require` arity.
 155 * Fixed issue [#880](https://github.com/jakubpawlowicz/clean-css/issues/880) - incorrect token type identification.
 156
 157 [4.0.4 / 2017-02-04](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.3...v4.0.4)
 158 ==================
 159
 160 * Fixed issue [#879](https://github.com/jakubpawlowicz/clean-css/issues/879) - incorrect handling of spaces in paths.
 161 * Fixed issue [#878](https://github.com/jakubpawlowicz/clean-css/issues/878) - invalid double backslash tokenization.
 162
 163 [4.0.3 / 2017-01-30](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.2...v4.0.3)
 164 ==================
 165
 166 * Fixed issue [#875](https://github.com/jakubpawlowicz/clean-css/issues/875) - invalid traversing in semantic merging.
 167
 168 [4.0.2 / 2017-01-26](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.1...v4.0.2)
 169 ==================
 170
 171 * Fixed issue [#874](https://github.com/jakubpawlowicz/clean-css/issues/874) - regression in at-rule tokenization.
 172
 173 [4.0.1 / 2017-01-25](https://github.com/jakubpawlowicz/clean-css/compare/v4.0.0...v4.0.1)
 174 ==================
 175
 176 * Fixed issue [#866](https://github.com/jakubpawlowicz/clean-css/issues/866) - edge case in `inline` option.
 177 * Fixed issue [#867](https://github.com/jakubpawlowicz/clean-css/issues/867) - skip optimizing variable values.
 178 * Fixed issue [#868](https://github.com/jakubpawlowicz/clean-css/issues/868) - accept absolute paths in input hash.
 179 * Fixed issue [#872](https://github.com/jakubpawlowicz/clean-css/issues/872) - edge case in CSS tokenization.
 180
 181 [4.0.0 / 2017-01-23](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.24...v4.0.0)
 182 ==================
 183
 184 * Adds more detailed error & warning messages on top of the new tokenizer.
 185 * Disables restructuring optimizations by default until optimized in #533.
 186 * Fixes a bug ignoring incorrect properties in complex restructuring.
 187 * Requires Node.js 4.0+ to run.
 188 * Removes `benchmark` API option as total time is always reported under `stats` property.
 189 * Removes `debug` API switch as stats are always gathered and available under `stats` property.
 190 * Replaces the old tokenizer with a new one which doesn't use any escaping.
 191 * Replaces the old `@import` inlining with one on top of the new tokenizer.
 192 * Re-enables `background-(clip|origin|size)` merging with `background` shorthand.
 193 * Simplifies URL rebasing with a single `rebaseTo` option in API or inferred from `--output` in CLI.
 194 * Splits `inliner` option into `inlineRequest` and `inlineTimeout`.
 195 * Fixed issue [#209](https://github.com/jakubpawlowicz/clean-css/issues/209) - adds output formatting via `format` flag.
 196 * Fixed issue [#290](https://github.com/jakubpawlowicz/clean-css/issues/290) - removes aggressive merging.
 197 * Fixed issue [#432](https://github.com/jakubpawlowicz/clean-css/issues/432) - adds URLs normalization.
 198 * Fixed issue [#460](https://github.com/jakubpawlowicz/clean-css/issues/460) - unescaped semicolon in selector.
 199 * Fixed issue [#657](https://github.com/jakubpawlowicz/clean-css/issues/657) - adds property name validation.
 200 * Fixed issue [#685](https://github.com/jakubpawlowicz/clean-css/issues/685) - adds lowercasing hex colors optimization.
 201 * Fixed issue [#686](https://github.com/jakubpawlowicz/clean-css/issues/686) - adds rounding precision for all units.
 202 * Fixed issue [#703](https://github.com/jakubpawlowicz/clean-css/issues/703) - changes default IE compatibility to 10+.
 203 * Fixed issue [#731](https://github.com/jakubpawlowicz/clean-css/issues/731) - adds granular control over level 2 optimizations.
 204 * Fixed issue [#739](https://github.com/jakubpawlowicz/clean-css/issues/739) - error when a closing brace is missing.
 205 * Fixed issue [#750](https://github.com/jakubpawlowicz/clean-css/issues/750) - allows `width` overriding.
 206 * Fixed issue [#756](https://github.com/jakubpawlowicz/clean-css/issues/756) - adds disabling font-weight optimizations.
 207 * Fixed issue [#758](https://github.com/jakubpawlowicz/clean-css/issues/758) - ignores rules with empty selector.
 208 * Fixed issue [#767](https://github.com/jakubpawlowicz/clean-css/issues/767) - disables remote `@import` inlining by default.
 209 * Fixed issue [#773](https://github.com/jakubpawlowicz/clean-css/issues/773) - adds reordering based on selector specificity.
 210 * Fixed issue [#785](https://github.com/jakubpawlowicz/clean-css/issues/785) - adds `@font-face` de-duplication.
 211 * Fixed issue [#791](https://github.com/jakubpawlowicz/clean-css/issues/791) - resolves imports in-memory if possible.
 212 * Fixed issue [#796](https://github.com/jakubpawlowicz/clean-css/issues/796) - semantic merging for `@media` blocks.
 213 * Fixed issue [#801](https://github.com/jakubpawlowicz/clean-css/issues/801) - smarter `@import` inlining.
 214 * Fixed issue [#806](https://github.com/jakubpawlowicz/clean-css/issues/806) - skip optimizing variable properties.
 215 * Fixed issue [#817](https://github.com/jakubpawlowicz/clean-css/issues/817) - makes `off` disable rounding.
 216 * Fixed issue [#818](https://github.com/jakubpawlowicz/clean-css/issues/818) - disables `px` rounding by default.
 217 * Fixed issue [#828](https://github.com/jakubpawlowicz/clean-css/issues/828) - `-chrome-` hack support.
 218 * Fixed issue [#829](https://github.com/jakubpawlowicz/clean-css/issues/829) - adds more strict selector merging rules.
 219 * Fixed issue [#834](https://github.com/jakubpawlowicz/clean-css/issues/834) - adds extra line break in nested blocks.
 220 * Fixed issue [#836](https://github.com/jakubpawlowicz/clean-css/issues/836) - enables level `0` optimizations.
 221 * Fixed issue [#839](https://github.com/jakubpawlowicz/clean-css/issues/839) - allows URIs in import inlining rules.
 222 * Fixed issue [#840](https://github.com/jakubpawlowicz/clean-css/issues/840) - allows input source map as map object.
 223 * Fixed issue [#843](https://github.com/jakubpawlowicz/clean-css/issues/843) - regression in selector handling.
 224 * Fixed issue [#845](https://github.com/jakubpawlowicz/clean-css/issues/845) - web compatibility of 4.0 branch.
 225 * Fixed issue [#847](https://github.com/jakubpawlowicz/clean-css/issues/847) - regression in handling invalid selectors.
 226 * Fixed issue [#849](https://github.com/jakubpawlowicz/clean-css/issues/849) - disables inlining protocol-less resources.
 227 * Fixed issue [#856](https://github.com/jakubpawlowicz/clean-css/issues/856) - allows `minify` to return a promise.
 228 * Fixed issue [#857](https://github.com/jakubpawlowicz/clean-css/issues/857) - normalizes CleanCSS API interface.
 229 * Fixed issue [#863](https://github.com/jakubpawlowicz/clean-css/issues/863) - adds `transform` callback for custom optimizations.
 230
 231 [3.4.26 / 2017-05-10](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.25...v3.4.26)
 232 ==================
 233
 234 * Backports [#939](https://github.com/jakubpawlowicz/clean-css/issues/939) - semicolon after `@apply` at-rule.
 235
 236 [3.4.25 / 2017-02-22](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.24...v3.4.25)
 237 ==================
 238
 239 * Fixed issue [#897](https://github.com/jakubpawlowicz/clean-css/issues/897) - tokenization with escaped markers.
 240
 241 [3.4.24 / 2017-01-20](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.23...v3.4.24)
 242 ==================
 243
 244 * Fixed issue [#859](https://github.com/jakubpawlowicz/clean-css/issues/859) - avoid `-webkit-border-radius` optimizations.
 245
 246 [3.4.23 / 2016-12-17](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.22...v3.4.23)
 247 ==================
 248
 249 * Fixed issue [#844](https://github.com/jakubpawlowicz/clean-css/issues/844) - regression in property values extraction.
 250
 251 [3.4.22 / 2016-12-12](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.21...v3.4.22)
 252 ==================
 253
 254 * Fixed issue [#841](https://github.com/jakubpawlowicz/clean-css/issues/841) - disabled importing and files passed as array.
 255 * Ignores `@import` at-rules if appearing after any non-`@import` rules.
 256
 257 [3.4.21 / 2016-11-16](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.20...v3.4.21)
 258 ==================
 259
 260 * Fixed issue [#821](https://github.com/jakubpawlowicz/clean-css/issues/821) - reducing non-adjacent rules.
 261 * Fixed issue [#830](https://github.com/jakubpawlowicz/clean-css/issues/830) - reordering border-* properties.
 262 * Fixed issue [#833](https://github.com/jakubpawlowicz/clean-css/issues/833) - moving `@media` queries.
 263
 264 [3.4.20 / 2016-09-26](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.19...v3.4.20)
 265 ==================
 266
 267 * Fixed issue [#814](https://github.com/jakubpawlowicz/clean-css/issues/814) - `:selection` rule merging.
 268
 269 [3.4.19 / 2016-07-25](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.18...v3.4.19)
 270 ==================
 271
 272 * Fixed issue [#795](https://github.com/jakubpawlowicz/clean-css/issues/795) - `!important` and override compacting.
 273
 274 [3.4.18 / 2016-06-15](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.17...v3.4.18)
 275 ==================
 276
 277 * Fixed issue [#787](https://github.com/jakubpawlowicz/clean-css/issues/787) - regression in processing data URIs.
 278
 279 [3.4.17 / 2016-06-04](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.16...v3.4.17)
 280 ==================
 281
 282 * Fixed issue [#783](https://github.com/jakubpawlowicz/clean-css/issues/783) - regression in processing data URIs.
 283
 284 [3.4.16 / 2016-06-02](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.15...v3.4.16)
 285 ==================
 286
 287 * Fixed issue [#781](https://github.com/jakubpawlowicz/clean-css/issues/781) - regression in override compacting.
 288 * Fixed issue [#782](https://github.com/jakubpawlowicz/clean-css/issues/782) - regression in processing data URIs.
 289
 290 [3.4.15 / 2016-06-01](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.14...v3.4.15)
 291 ==================
 292
 293 * Fixed issue [#776](https://github.com/jakubpawlowicz/clean-css/issues/776) - edge case in quoted data URIs.
 294 * Fixed issue [#779](https://github.com/jakubpawlowicz/clean-css/issues/779) - merging `background-(position|size)`.
 295 * Fixed issue [#780](https://github.com/jakubpawlowicz/clean-css/issues/780) - space after inlined variables.
 296
 297 [3.4.14 / 2016-05-31](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.13...v3.4.14)
 298 ==================
 299
 300 * Fixed issue [#751](https://github.com/jakubpawlowicz/clean-css/issues/751) - stringifying CSS variables.
 301 * Fixed issue [#763](https://github.com/jakubpawlowicz/clean-css/issues/763) - data URI SVG and quoting.
 302 * Fixed issue [#765](https://github.com/jakubpawlowicz/clean-css/issues/765) - two values of border-radius.
 303 * Fixed issue [#768](https://github.com/jakubpawlowicz/clean-css/issues/768) - invalid border-radius property.
 304
 305 [3.4.13 / 2016-05-23](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.12...v3.4.13)
 306 ==================
 307
 308 * Fixed issue [#734](https://github.com/jakubpawlowicz/clean-css/issues/769) - Node.js 6.x support.
 309
 310 [3.4.12 / 2016-04-09](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.11...v3.4.12)
 311 ==================
 312
 313 * Fixed issue [#734](https://github.com/jakubpawlowicz/clean-css/issues/734) - `--root` option edge case.
 314 * Fixed issue [#758](https://github.com/jakubpawlowicz/clean-css/issues/758) - treats empty rule as unmergeable.
 315
 316 [3.4.11 / 2016-04-01](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.10...v3.4.11)
 317 ==================
 318
 319 * Fixed issue [#738](https://github.com/jakubpawlowicz/clean-css/issues/738) - edge case in comment processing.
 320 * Fixed issue [#741](https://github.com/jakubpawlowicz/clean-css/issues/741) - HTTP proxy with HTTPS inlining.
 321 * Fixed issue [#743](https://github.com/jakubpawlowicz/clean-css/issues/743) - background shorthand and source maps.
 322 * Fixed issue [#745](https://github.com/jakubpawlowicz/clean-css/issues/745) - matching mixed case `!important`.
 323
 324 [3.4.10 / 2016-02-29](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.9...v3.4.10)
 325 ==================
 326
 327 * Fixed issue [#735](https://github.com/jakubpawlowicz/clean-css/issues/735) - whitespace removal with escaped chars.
 328
 329 [3.4.9 / 2016-01-03](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.8...v3.4.9)
 330 ==================
 331
 332 * Sped up merging by body advanced optimization.
 333 * Fixed issue [#693](https://github.com/jakubpawlowicz/clean-css/issues/693) - restructuring edge case.
 334 * Fixed issue [#711](https://github.com/jakubpawlowicz/clean-css/issues/711) - border fuzzy matching.
 335 * Fixed issue [#714](https://github.com/jakubpawlowicz/clean-css/issues/714) - stringifying property level at rules.
 336 * Fixed issue [#715](https://github.com/jakubpawlowicz/clean-css/issues/715) - stack too deep in comment scan.
 337
 338 [3.4.8 / 2015-11-13](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.7...v3.4.8)
 339 ==================
 340
 341 * Fixed issue [#676](https://github.com/jakubpawlowicz/clean-css/issues/676) - fuzzy matching unqoted data URIs.
 342
 343 [3.4.7 / 2015-11-10](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.6...v3.4.7)
 344 ==================
 345
 346 * Fixed issue [#692](https://github.com/jakubpawlowicz/clean-css/issues/692) - edge case in URL quoting.
 347 * Fixed issue [#695](https://github.com/jakubpawlowicz/clean-css/issues/695) - shorthand overriding edge case.
 348 * Fixed issue [#699](https://github.com/jakubpawlowicz/clean-css/issues/699) - IE9 transparent hack.
 349 * Fixed issue [#701](https://github.com/jakubpawlowicz/clean-css/issues/701) - `url` quoting with hash arguments.
 350
 351 [3.4.6 / 2015-10-14](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.5...v3.4.6)
 352 ==================
 353
 354 * Fixed issue [#679](https://github.com/jakubpawlowicz/clean-css/issues/679) - wrong rebasing of remote URLs.
 355
 356 [3.4.5 / 2015-09-28](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.4...v3.4.5)
 357 ==================
 358
 359 * Fixed issue [#681](https://github.com/jakubpawlowicz/clean-css/issues/681) - property inheritance & restructuring.
 360 * Fixed issue [#675](https://github.com/jakubpawlowicz/clean-css/issues/675) - overriding with `!important`.
 361
 362 [3.4.4 / 2015-09-21](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.3...v3.4.4)
 363 ==================
 364
 365 * Fixed issue [#626](https://github.com/jakubpawlowicz/clean-css/issues/626) - edge case in import rebasing.
 366 * Fixed issue [#674](https://github.com/jakubpawlowicz/clean-css/issues/674) - adjacent merging order.
 367
 368 [3.4.3 / 2015-09-15](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.2...v3.4.3)
 369 ==================
 370
 371 * Fixed issue [#668](https://github.com/jakubpawlowicz/clean-css/issues/668) - node v4 path.join.
 372 * Fixed issue [#669](https://github.com/jakubpawlowicz/clean-css/issues/669) - adjacent overriding with `!important`.
 373
 374 [3.4.2 / 2015-09-14](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.1...v3.4.2)
 375 ==================
 376
 377 * Fixed issue [#598](https://github.com/jakubpawlowicz/clean-css/issues/598) - restructuring border properties.
 378 * Fixed issue [#654](https://github.com/jakubpawlowicz/clean-css/issues/654) - disables length optimizations.
 379 * Fixed issue [#655](https://github.com/jakubpawlowicz/clean-css/issues/655) - shorthands override merging.
 380 * Fixed issue [#660](https://github.com/jakubpawlowicz/clean-css/issues/660) - !important token overriding.
 381 * Fixed issue [#662](https://github.com/jakubpawlowicz/clean-css/issues/662) - !important selector reducing.
 382 * Fixed issue [#667](https://github.com/jakubpawlowicz/clean-css/issues/667) - rebasing remote URLs.
 383
 384 [3.4.1 / 2015-08-27](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.0...v3.4.1)
 385 ==================
 386
 387 * Fixed issue [#652](https://github.com/jakubpawlowicz/clean-css/issues/652) - order of restoring and removing tokens.
 388
 389 [3.4.0 / 2015-08-27](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.10...v3.4.0)
 390 ==================
 391
 392 * Adds an option for a fine-grained `@import` control.
 393 * Adds unit compatibility switches to disable length optimizations.
 394 * Adds inferring proxy settings from HTTP_PROXY environment variable.
 395 * Adds support for Polymer / Web Components special selectors.
 396 * Adds support for Polymer mixins.
 397 * Adds testing source maps in batch mode.
 398 * Unifies wrappers for simple & advanced optimizations.
 399 * Fixed issue [#596](https://github.com/jakubpawlowicz/clean-css/issues/596) - support for !ie IE<8 hack.
 400 * Fixed issue [#599](https://github.com/jakubpawlowicz/clean-css/issues/599) - support for inlined source maps.
 401 * Fixed issue [#607](https://github.com/jakubpawlowicz/clean-css/issues/607) - adds better rule reordering.
 402 * Fixed issue [#612](https://github.com/jakubpawlowicz/clean-css/issues/612) - adds HTTP proxy support.
 403 * Fixed issue [#618](https://github.com/jakubpawlowicz/clean-css/issues/618) - adds safer function validation.
 404 * Fixed issue [#625](https://github.com/jakubpawlowicz/clean-css/issues/625) - adds length unit optimizations.
 405 * Fixed issue [#632](https://github.com/jakubpawlowicz/clean-css/issues/632) - adds disabling remote `import`s.
 406 * Fixed issue [#635](https://github.com/jakubpawlowicz/clean-css/issues/635) - adds safer `0%` optimizations.
 407 * Fixed issue [#644](https://github.com/jakubpawlowicz/clean-css/issues/644) - adds time unit optimizations.
 408 * Fixed issue [#645](https://github.com/jakubpawlowicz/clean-css/issues/645) - adds bottom to top `media` merging.
 409 * Fixed issue [#648](https://github.com/jakubpawlowicz/clean-css/issues/648) - adds property level at-rule support.
 410
 411 [3.3.10 / 2015-08-27](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.9...v3.3.10)
 412 ==================
 413
 414 * Adds better comments + keepBreaks handling.
 415 * Adds better text normalizing in source maps mode.
 416 * Fixes non-adjacent optimizations for source maps.
 417 * Fixes removing unused items.
 418 * Improves `outline` break up with source maps.
 419 * Refixed issue [#629](https://github.com/jakubpawlowicz/clean-css/issues/629) - source maps & background shorthands.
 420
 421 [3.3.9 / 2015-08-09](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.8...v3.3.9)
 422 ==================
 423
 424 * Fixed issue [#640](https://github.com/jakubpawlowicz/clean-css/issues/640) - URI processing regression.
 425
 426 [3.3.8 / 2015-08-06](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.7...v3.3.8)
 427 ==================
 428
 429 * Fixed issue [#629](https://github.com/jakubpawlowicz/clean-css/issues/629) - source maps & background shorthands.
 430 * Fixed issue [#630](https://github.com/jakubpawlowicz/clean-css/issues/630) - vendor prefixed flex optimizations.
 431 * Fixed issue [#633](https://github.com/jakubpawlowicz/clean-css/issues/633) - handling data URI with brackets.
 432 * Fixed issue [#634](https://github.com/jakubpawlowicz/clean-css/issues/634) - merging :placeholder selectors.
 433
 434 [3.3.7 / 2015-07-29](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.6...v3.3.7)
 435 ==================
 436
 437 * Fixed issue [#616](https://github.com/jakubpawlowicz/clean-css/issues/616) - ordering in restructuring.
 438
 439 [3.3.6 / 2015-07-14](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.5...v3.3.6)
 440 ==================
 441
 442 * Fixed issue [#620](https://github.com/jakubpawlowicz/clean-css/issues/620) - `bold` style in font shorthands.
 443
 444 [3.3.5 / 2015-07-01](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.4...v3.3.5)
 445 ==================
 446
 447 * Fixed issue [#608](https://github.com/jakubpawlowicz/clean-css/issues/608) - custom URI protocols handling.
 448
 449 [3.3.4 / 2015-06-24](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.3...v3.3.4)
 450 ==================
 451
 452 * Fixed issue [#610](https://github.com/jakubpawlowicz/clean-css/issues/610) - `border:inherit` restoring.
 453 * Fixed issue [#611](https://github.com/jakubpawlowicz/clean-css/issues/611) - edge case in quote stripping.
 454
 455 [3.3.3 / 2015-06-16](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.2...v3.3.3)
 456 ==================
 457
 458 * Fixed issue [#603](https://github.com/jakubpawlowicz/clean-css/issues/603) - IE suffix hack defaults to on.
 459
 460 [3.3.2 / 2015-06-14](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.1...v3.3.2)
 461 ==================
 462
 463 * Fixed issue [#595](https://github.com/jakubpawlowicz/clean-css/issues/595) - more relaxed block matching.
 464 * Fixed issue [#601](https://github.com/jakubpawlowicz/clean-css/issues/601) - percentage minifying inside `flex`.
 465 * Fixed issue [#602](https://github.com/jakubpawlowicz/clean-css/issues/602) - backslash IE hacks after a space.
 466
 467 [3.3.1 / 2015-06-02](https://github.com/jakubpawlowicz/clean-css/compare/v3.3.0...v3.3.1)
 468 ==================
 469
 470 * Fixed issue [#590](https://github.com/jakubpawlowicz/clean-css/issues/590) - edge case in `@import` processing.
 471
 472 [3.3.0 / 2015-05-31](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.11...v3.3.0)
 473 ==================
 474
 475 * Cleans up url rebase code getting rid of unnecessary state.
 476 * Cleans up tokenizer code getting rid of unnecessary state.
 477 * Moves source maps tracker into lib/source-maps/track.
 478 * Moves tokenizer code into lib/tokenizer.
 479 * Moves URL scanner into lib/urls/reduce (was named incorrectly before).
 480 * Moves URL rebasing & rewriting into lib/urls.
 481 * Fixed issue [#375](https://github.com/jakubpawlowicz/clean-css/issues/375) - unit compatibility switches.
 482 * Fixed issue [#436](https://github.com/jakubpawlowicz/clean-css/issues/436) - refactors URI rewriting.
 483 * Fixed issue [#448](https://github.com/jakubpawlowicz/clean-css/issues/448) - rebasing no protocol URIs.
 484 * Fixed issue [#517](https://github.com/jakubpawlowicz/clean-css/issues/517) - turning off color optimizations.
 485 * Fixed issue [#542](https://github.com/jakubpawlowicz/clean-css/issues/542) - space after closing brace in IE.
 486 * Fixed issue [#562](https://github.com/jakubpawlowicz/clean-css/issues/562) - optimizing invalid color values.
 487 * Fixed issue [#563](https://github.com/jakubpawlowicz/clean-css/issues/563) - `background:inherit` restoring.
 488 * Fixed issue [#570](https://github.com/jakubpawlowicz/clean-css/issues/570) - rebasing "no-url()" imports.
 489 * Fixed issue [#574](https://github.com/jakubpawlowicz/clean-css/issues/574) - rewriting internal URLs.
 490 * Fixed issue [#575](https://github.com/jakubpawlowicz/clean-css/issues/575) - missing directory as a `target`.
 491 * Fixed issue [#577](https://github.com/jakubpawlowicz/clean-css/issues/577) - `background-clip` into shorthand.
 492 * Fixed issue [#579](https://github.com/jakubpawlowicz/clean-css/issues/579) - `background-origin` into shorthand.
 493 * Fixed issue [#580](https://github.com/jakubpawlowicz/clean-css/issues/580) - mixed `@import` processing.
 494 * Fixed issue [#582](https://github.com/jakubpawlowicz/clean-css/issues/582) - overriding with prefixed values.
 495 * Fixed issue [#583](https://github.com/jakubpawlowicz/clean-css/issues/583) - URL quoting for SVG data.
 496 * Fixed issue [#587](https://github.com/jakubpawlowicz/clean-css/issues/587) - too aggressive `border` reordering.
 497
 498 [3.2.11 / 2015-05-31](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.10...v3.2.11)
 499 ==================
 500
 501 * Fixed issue [#563](https://github.com/jakubpawlowicz/clean-css/issues/563) - `background:inherit` restoring.
 502 * Fixed issue [#582](https://github.com/jakubpawlowicz/clean-css/issues/582) - overriding with prefixed values.
 503 * Fixed issue [#583](https://github.com/jakubpawlowicz/clean-css/issues/583) - URL quoting for SVG data.
 504 * Fixed issue [#587](https://github.com/jakubpawlowicz/clean-css/issues/587) - too aggressive `border` reordering.
 505
 506 [3.2.10 / 2015-05-14](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.9...v3.2.10)
 507 ==================
 508
 509 * Fixed issue [#572](https://github.com/jakubpawlowicz/clean-css/issues/572) - empty elements removal.
 510
 511 [3.2.9 / 2015-05-08](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.8...v3.2.9)
 512 ==================
 513
 514 * Fixed issue [#567](https://github.com/jakubpawlowicz/clean-css/issues/567) - merging colors as functions.
 515
 516 [3.2.8 / 2015-05-04](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.7...v3.2.8)
 517 ==================
 518
 519 * Fixed issue [#561](https://github.com/jakubpawlowicz/clean-css/issues/561) - restructuring special selectors.
 520
 521 [3.2.7 / 2015-05-03](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.6...v3.2.7)
 522 ==================
 523
 524 * Fixed issue [#551](https://github.com/jakubpawlowicz/clean-css/issues/551) - edge case in restructuring.
 525 * Fixed issue [#553](https://github.com/jakubpawlowicz/clean-css/issues/553) - another style of SVG fallback.
 526 * Fixed issue [#558](https://github.com/jakubpawlowicz/clean-css/issues/558) - units in same selector merging.
 527
 528 [3.2.6 / 2015-04-28](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.5...v3.2.6)
 529 ==================
 530
 531 * Fixed issue [#550](https://github.com/jakubpawlowicz/clean-css/issues/550) - proper `contentSources` tracking.
 532 * Fixed issue [#556](https://github.com/jakubpawlowicz/clean-css/issues/556) - regression in IE backslash hacks.
 533
 534 [3.2.5 / 2015-04-25](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.4...v3.2.5)
 535 ==================
 536
 537 * Fixed issue [#543](https://github.com/jakubpawlowicz/clean-css/issues/543) - better "comment in body" handling.
 538 * Fixed issue [#548](https://github.com/jakubpawlowicz/clean-css/issues/548) - regression in font minifying.
 539 * Fixed issue [#549](https://github.com/jakubpawlowicz/clean-css/issues/549) - special comments in source maps.
 540
 541 [3.2.4 / 2015-04-24](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.3...v3.2.4)
 542 ==================
 543
 544 * Fixed issue [#544](https://github.com/jakubpawlowicz/clean-css/issues/544) - regression in same value merging.
 545 * Fixed issue [#546](https://github.com/jakubpawlowicz/clean-css/issues/546) - IE<11 `calc()` issue.
 546
 547 [3.2.3 / 2015-04-22](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.2...v3.2.3)
 548 ==================
 549
 550 * Fixed issue [#541](https://github.com/jakubpawlowicz/clean-css/issues/541) - `outline-style:auto` in shorthand.
 551
 552 [3.2.2 / 2015-04-21](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.1...v3.2.2)
 553 ==================
 554
 555 * Fixed issue [#537](https://github.com/jakubpawlowicz/clean-css/issues/537) - regression in simple optimizer.
 556
 557 [3.2.1 / 2015-04-20](https://github.com/jakubpawlowicz/clean-css/compare/v3.2.0...v3.2.1)
 558 ==================
 559
 560 * Fixed issue [#534](https://github.com/jakubpawlowicz/clean-css/issues/534) - wrong `@font-face` stringifying.
 561
 562 [3.2.0 / 2015-04-19](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.9...v3.2.0)
 563 ==================
 564
 565 * Bumps commander to 2.8.x.
 566 * Fixes remote asset rebasing when passing data as a hash.
 567 * Improves path resolution inside source maps.
 568 * Makes `root` option implicitely default to `process.cwd()`.
 569 * Fixed issue [#371](https://github.com/jakubpawlowicz/clean-css/issues/371) - `background` fallback with `none`.
 570 * Fixed issue [#376](https://github.com/jakubpawlowicz/clean-css/issues/376) - option to disable `0[unit]` -> `0`.
 571 * Fixed issue [#396](https://github.com/jakubpawlowicz/clean-css/issues/396) - better input source maps tracking.
 572 * Fixed issue [#397](https://github.com/jakubpawlowicz/clean-css/issues/397) - support for source map sources.
 573 * Fixed issue [#399](https://github.com/jakubpawlowicz/clean-css/issues/399) - support compacting with source maps.
 574 * Fixed issue [#429](https://github.com/jakubpawlowicz/clean-css/issues/429) - unifies data tokenization.
 575 * Fixed issue [#446](https://github.com/jakubpawlowicz/clean-css/issues/446) - `list-style` fuzzy matching.
 576 * Fixed issue [#468](https://github.com/jakubpawlowicz/clean-css/issues/468) - bumps `source-map` to 0.4.x.
 577 * Fixed issue [#480](https://github.com/jakubpawlowicz/clean-css/issues/480) - extracting uppercase property names.
 578 * Fixed issue [#487](https://github.com/jakubpawlowicz/clean-css/issues/487) - source map paths under Windows.
 579 * Fixed issue [#490](https://github.com/jakubpawlowicz/clean-css/issues/490) - vendor prefixed multivalue `background`.
 580 * Fixed issue [#500](https://github.com/jakubpawlowicz/clean-css/issues/500) - merging duplicate adjacent properties.
 581 * Fixed issue [#504](https://github.com/jakubpawlowicz/clean-css/issues/504) - keeping `url()` quotes.
 582 * Fixed issue [#507](https://github.com/jakubpawlowicz/clean-css/issues/507) - merging longhands into many shorthands.
 583 * Fixed issue [#508](https://github.com/jakubpawlowicz/clean-css/issues/508) - removing duplicate media queries.
 584 * Fixed issue [#521](https://github.com/jakubpawlowicz/clean-css/issues/521) - unit optimizations inside `calc()`.
 585 * Fixed issue [#524](https://github.com/jakubpawlowicz/clean-css/issues/524) - timeouts in `@import` inlining.
 586 * Fixed issue [#526](https://github.com/jakubpawlowicz/clean-css/issues/526) - shorthand overriding into a function.
 587 * Fixed issue [#528](https://github.com/jakubpawlowicz/clean-css/issues/528) - better support for IE<9 hacks.
 588 * Fixed issue [#529](https://github.com/jakubpawlowicz/clean-css/issues/529) - wrong font weight minification.
 589
 590 [3.1.9 / 2015-04-04](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.8...v3.1.9)
 591 ==================
 592
 593 * Fixes issue [#511](https://github.com/jakubpawlowicz/clean-css/issues/511) - `)` advanced processing.
 594
 595 [3.1.8 / 2015-03-17](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.7...v3.1.8)
 596 ==================
 597
 598 * Fixes issue [#498](https://github.com/jakubpawlowicz/clean-css/issues/498) - reordering and flexbox.
 599 * Fixes issue [#499](https://github.com/jakubpawlowicz/clean-css/issues/499) - too aggressive `-` removal.
 600
 601 [3.1.7 / 2015-03-16](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.6...v3.1.7)
 602 ==================
 603
 604 * Backports fix to [#480](https://github.com/jakubpawlowicz/clean-css/issues/480) - reordering and uppercase properties.
 605 * Fixes issue [#496](https://github.com/jakubpawlowicz/clean-css/issues/496) - space after bracket removal.
 606
 607 [3.1.6 / 2015-03-12](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.5...v3.1.6)
 608 ==================
 609
 610 * Fixes issue [#489](https://github.com/jakubpawlowicz/clean-css/issues/489) - `AlphaImageLoader` IE filter.
 611
 612 [3.1.5 / 2015-03-06](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.4...v3.1.5)
 613 ==================
 614
 615 * Fixes issue [#483](https://github.com/jakubpawlowicz/clean-css/issues/483) - property order in restructuring.
 616
 617 [3.1.4 / 2015-03-04](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.3...v3.1.4)
 618 ==================
 619
 620 * Fixes issue [#472](https://github.com/jakubpawlowicz/clean-css/issues/472) - broken function minification.
 621 * Fixes issue [#477](https://github.com/jakubpawlowicz/clean-css/issues/477) - `@import`s order in restructuring.
 622 * Fixes issue [#478](https://github.com/jakubpawlowicz/clean-css/issues/478) - ultimate fix to brace whitespace.
 623
 624 [3.1.3 / 2015-03-03](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.2...v3.1.3)
 625 ==================
 626
 627 * Fixes issue [#464](https://github.com/jakubpawlowicz/clean-css/issues/464) - data URI with quoted braces.
 628 * Fixes issue [#475](https://github.com/jakubpawlowicz/clean-css/issues/475) - whitespace after closing brace.
 629
 630 [3.1.2 / 2015-03-01](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.1...v3.1.2)
 631 ==================
 632
 633 * Refixed issue [#471](https://github.com/jakubpawlowicz/clean-css/issues/471) - correct order after restructuring.
 634 * Fixes issue [#466](https://github.com/jakubpawlowicz/clean-css/issues/466) - rebuilding background shorthand.
 635 * Fixes issue [#462](https://github.com/jakubpawlowicz/clean-css/issues/462) - escaped apostrophes in selectors.
 636
 637 [3.1.1 / 2015-02-27](https://github.com/jakubpawlowicz/clean-css/compare/v3.1.0...v3.1.1)
 638 ==================
 639
 640 * Fixed issue [#469](https://github.com/jakubpawlowicz/clean-css/issues/469) - extracting broken property.
 641 * Fixed issue [#470](https://github.com/jakubpawlowicz/clean-css/issues/470) - negative padding removal.
 642 * Fixed issue [#471](https://github.com/jakubpawlowicz/clean-css/issues/471) - correct order after restructuring.
 643
 644 [3.1.0 / 2015-02-26](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.10...v3.1.0)
 645 ==================
 646
 647 * Adds `0deg` to `0` minification where possible.
 648 * Adds better non-adjacent selector merging when body is the same.
 649 * Adds official support for node.js 0.12.
 650 * Adds official support for io.js 1.0.
 651 * Adds restructuring optimizations to reorganize selectors, which vastly improves minification.
 652 * Fixed issue [#158](https://github.com/jakubpawlowicz/clean-css/issues/158) - adds body-based selectors reduction.
 653 * Fixed issue [#182](https://github.com/jakubpawlowicz/clean-css/issues/182) - removing space after closing brace.
 654 * Fixed issue [#204](https://github.com/jakubpawlowicz/clean-css/issues/204) - `@media` merging.
 655 * Fixed issue [#351](https://github.com/jakubpawlowicz/clean-css/issues/351) - remote `@import`s after content.
 656 * Fixed issue [#357](https://github.com/jakubpawlowicz/clean-css/issues/357) - non-standard but valid URLs.
 657 * Fixed issue [#416](https://github.com/jakubpawlowicz/clean-css/issues/416) - accepts hash as `minify` argument.
 658 * Fixed issue [#419](https://github.com/jakubpawlowicz/clean-css/issues/419) - multiple input source maps.
 659 * Fixed issue [#435](https://github.com/jakubpawlowicz/clean-css/issues/435) - `background-clip` in shorthand.
 660 * Fixed issue [#439](https://github.com/jakubpawlowicz/clean-css/issues/439) - `background-origin` in shorthand.
 661 * Fixed issue [#442](https://github.com/jakubpawlowicz/clean-css/issues/442) - space before adjacent `nav`.
 662 * Fixed issue [#445](https://github.com/jakubpawlowicz/clean-css/issues/445) - regression issue in url processor.
 663 * Fixed issue [#449](https://github.com/jakubpawlowicz/clean-css/issues/449) - warns of missing close braces.
 664 * Fixed issue [#463](https://github.com/jakubpawlowicz/clean-css/issues/463) - relative remote `@import` URLs.
 665
 666 [3.0.10 / 2015-02-07](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.9...v3.0.10)
 667 ==================
 668
 669 * Fixed issue [#453](https://github.com/jakubpawlowicz/clean-css/issues/453) - double `background-repeat`.
 670 * Fixed issue [#455](https://github.com/jakubpawlowicz/clean-css/issues/455) - property extracting regression.
 671
 672 [3.0.9 / 2015-02-04](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.8...v3.0.9)
 673 ==================
 674
 675 * Fixed issue [#452](https://github.com/jakubpawlowicz/clean-css/issues/452) - regression in advanced merging.
 676
 677 [3.0.8 / 2015-01-31](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.7...v3.0.8)
 678 ==================
 679
 680 * Fixed issue [#447](https://github.com/jakubpawlowicz/clean-css/issues/447) - `background-color` in shorthands.
 681 * Fixed issue [#450](https://github.com/jakubpawlowicz/clean-css/issues/450) - name to hex color converting.
 682
 683 [3.0.7 / 2015-01-22](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.6...v3.0.7)
 684 ==================
 685
 686 * Fixed issue [#441](https://github.com/jakubpawlowicz/clean-css/issues/441) - hex to name color converting.
 687
 688 [3.0.6 / 2015-01-20](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.5...v3.0.6)
 689 ==================
 690
 691 * Refixed issue [#414](https://github.com/jakubpawlowicz/clean-css/issues/414) - source maps position fallback.
 692
 693 [3.0.5 / 2015-01-18](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.4...v3.0.5)
 694 ==================
 695
 696 * Fixed issue [#414](https://github.com/jakubpawlowicz/clean-css/issues/414) - source maps position fallback.
 697 * Fixed issue [#433](https://github.com/jakubpawlowicz/clean-css/issues/433) - meging `!important` in shorthands.
 698
 699 [3.0.4 / 2015-01-11](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.3...v3.0.4)
 700 ==================
 701
 702 * Fixed issue [#314](https://github.com/jakubpawlowicz/clean-css/issues/314) - spaces inside `calc`.
 703
 704 [3.0.3 / 2015-01-07](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.2...v3.0.3)
 705 ==================
 706
 707 * Just a version bump as npm incorrectly things 2.2.23 is the latest one.
 708
 709 [3.0.2 / 2015-01-04](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.1...v3.0.2)
 710 ==================
 711
 712 * Fixed issue [#422](https://github.com/jakubpawlowicz/clean-css/issues/422) - handling `calc` as a unit.
 713
 714 [3.0.1 / 2014-12-19](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.0...v3.0.1)
 715 ==================
 716
 717 * Fixed issue [#410](https://github.com/jakubpawlowicz/clean-css/issues/410) - advanced merging and comments.
 718 * Fixed issue [#411](https://github.com/jakubpawlowicz/clean-css/issues/411) - properties and important comments.
 719
 720 [3.0.0 / 2014-12-18](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.22...v3.0.0)
 721 ==================
 722
 723 * Adds more granular control over compatibility settings.
 724 * Adds support for @counter-style at-rule.
 725 * Adds `--source-map`/`sourceMap` switch for building input's source map.
 726 * Adds `--skip-shorthand-compacting`/`shorthandComacting` option for disabling shorthand compacting.
 727 * Allows `target` option to be a path to a folder instead of a file.
 728 * Allows disabling rounding precision. By [@superlukas](https://github.com/superlukas).
 729 * Breaks 2.x compatibility for using CleanCSS as a function.
 730 * Changes `minify` method output to handle multiple outputs.
 731 * Reworks minification to tokenize first then minify.
 732   See [changes](https://github.com/jakubpawlowicz/clean-css/compare/b06f37d...dd8c14a).
 733 * Removes support for node.js 0.8.x.
 734 * Renames `noAdvanced` option into `advanced`.
 735 * Renames `noAggressiveMerging` option into `aggressiveMerging`.
 736 * Renames `noRebase` option into `rebase`.
 737 * Speeds up advanced processing by shortening optimize loop.
 738 * Fixed issue [#125](https://github.com/jakubpawlowicz/clean-css/issues/125) - source maps!
 739 * Fixed issue [#344](https://github.com/jakubpawlowicz/clean-css/issues/344) - merging `background-size` into shorthand.
 740 * Fixed issue [#352](https://github.com/jakubpawlowicz/clean-css/issues/352) - honors rebasing in imported stylesheets.
 741 * Fixed issue [#360](https://github.com/jakubpawlowicz/clean-css/issues/360) - adds 7 extra CSS colors.
 742 * Fixed issue [#363](https://github.com/jakubpawlowicz/clean-css/issues/363) - `rem` units overriding `px`.
 743 * Fixed issue [#373](https://github.com/jakubpawlowicz/clean-css/issues/373) - proper `background` shorthand merging.
 744 * Fixed issue [#395](https://github.com/jakubpawlowicz/clean-css/issues/395) - unescaped brackets in data URIs.
 745 * Fixed issue [#398](https://github.com/jakubpawlowicz/clean-css/issues/398) - restoring important comments.
 746 * Fixed issue [#400](https://github.com/jakubpawlowicz/clean-css/issues/400) - API to accept an array of filenames.
 747 * Fixed issue [#403](https://github.com/jakubpawlowicz/clean-css/issues/403) - tracking input files in source maps.
 748 * Fixed issue [#404](https://github.com/jakubpawlowicz/clean-css/issues/404) - no state sharing in API.
 749 * Fixed issue [#405](https://github.com/jakubpawlowicz/clean-css/issues/405) - disables default `background-size` merging.
 750 * Refixed issue [#304](https://github.com/jakubpawlowicz/clean-css/issues/304) - `background-position` merging.
 751
 752 [2.2.22 / 2014-12-13](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.21...v2.2.22)
 753 ==================
 754
 755 * Backports fix to issue [#304](https://github.com/jakubpawlowicz/clean-css/issues/304) - `background-position` merging.
 756
 757 [2.2.21 / 2014-12-10](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.20...v2.2.21)
 758 ==================
 759
 760 * Backports fix to issue [#373](https://github.com/jakubpawlowicz/clean-css/issues/373) - `background` shorthand merging.
 761
 762 [2.2.20 / 2014-12-02](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.19...v2.2.20)
 763 ==================
 764
 765 * Backports fix to issue [#390](https://github.com/jakubpawlowicz/clean-css/issues/390) - pseudo-class merging.
 766
 767 [2.2.19 / 2014-11-20](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.18...v2.2.19)
 768 ==================
 769
 770 * Fixed issue [#385](https://github.com/jakubpawlowicz/clean-css/issues/385) - edge cases in processing cut off data.
 771
 772 [2.2.18 / 2014-11-17](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.17...v2.2.18)
 773 ==================
 774
 775 * Fixed issue [#383](https://github.com/jakubpawlowicz/clean-css/issues/383) - rounding fractions once again.
 776
 777 [2.2.17 / 2014-11-09](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.16...v2.2.17)
 778 ==================
 779
 780 * Fixed issue [#380](https://github.com/jakubpawlowicz/clean-css/issues/380) - rounding fractions to a whole number.
 781
 782 [2.2.16 / 2014-09-16](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.15...v2.2.16)
 783 ==================
 784
 785 * Fixed issue [#359](https://github.com/jakubpawlowicz/clean-css/issues/359) - handling escaped double backslash.
 786 * Fixed issue [#358](https://github.com/jakubpawlowicz/clean-css/issues/358) - property merging in compatibility mode.
 787 * Fixed issue [#356](https://github.com/jakubpawlowicz/clean-css/issues/356) - preserving `*+html` hack.
 788 * Fixed issue [#354](https://github.com/jakubpawlowicz/clean-css/issues/354) - `!important` overriding in shorthands.
 789
 790 [2.2.15 / 2014-09-01](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.14...v2.2.15)
 791 ==================
 792
 793 * Fixed issue [#343](https://github.com/jakubpawlowicz/clean-css/issues/343) - too aggressive `rgba`/`hsla` minification.
 794 * Fixed issue [#345](https://github.com/jakubpawlowicz/clean-css/issues/345) - URL rebasing for document relative ones.
 795 * Fixed issue [#346](https://github.com/jakubpawlowicz/clean-css/issues/346) - overriding `!important` by `!important`.
 796 * Fixed issue [#350](https://github.com/jakubpawlowicz/clean-css/issues/350) - edge cases in `@import` processing.
 797
 798 [2.2.14 / 2014-08-25](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.13...v2.2.14)
 799 ==================
 800
 801 * Makes multival operations idempotent.
 802 * Fixed issue [#339](https://github.com/jakubpawlowicz/clean-css/issues/339) - skips invalid properties.
 803 * Fixed issue [#341](https://github.com/jakubpawlowicz/clean-css/issues/341) - ensure output is shorter than input.
 804
 805 [2.2.13 / 2014-08-12](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.12...v2.2.13)
 806 ==================
 807
 808 * Fixed issue [#337](https://github.com/jakubpawlowicz/clean-css/issues/337) - handling component importance.
 809
 810 [2.2.12 / 2014-08-02](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.11...v2.2.12)
 811 ==================
 812
 813 * Fixed issue with tokenizer removing first selector after an unknown @ rule.
 814 * Fixed issue [#329](https://github.com/jakubpawlowicz/clean-css/issues/329) - `font` shorthands incorrectly processed.
 815 * Fixed issue [#332](https://github.com/jakubpawlowicz/clean-css/issues/332) - `background` shorthand with colors.
 816 * Refixed issue [#325](https://github.com/jakubpawlowicz/clean-css/issues/325) - invalid charset declarations.
 817
 818 [2.2.11 / 2014-07-28](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.10...v2.2.11)
 819 ==================
 820
 821 * Fixed issue [#326](https://github.com/jakubpawlowicz/clean-css/issues/326) - `background-size` regression.
 822
 823 [2.2.10 / 2014-07-27](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.9...v2.2.10)
 824 ==================
 825
 826 * Improved performance of advanced mode validators.
 827 * Fixed issue [#307](https://github.com/jakubpawlowicz/clean-css/issues/307) - `background-color` in multiple backgrounds.
 828 * Fixed issue [#322](https://github.com/jakubpawlowicz/clean-css/issues/322) - adds `background-size` support.
 829 * Fixed issue [#323](https://github.com/jakubpawlowicz/clean-css/issues/323) - stripping variable references.
 830 * Fixed issue [#325](https://github.com/jakubpawlowicz/clean-css/issues/325) - removing invalid `@charset` declarations.
 831
 832 [2.2.9 / 2014-07-23](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.8...v2.2.9)
 833 ==================
 834
 835 * Adds `background` normalization according to W3C spec.
 836 * Fixed issue [#316](https://github.com/jakubpawlowicz/clean-css/issues/316) - incorrect `background` processing.
 837
 838 [2.2.8 / 2014-07-14](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.7...v2.2.8)
 839 ==================
 840
 841 * Fixed issue [#313](https://github.com/jakubpawlowicz/clean-css/issues/313) - processing comment marks in URLs.
 842 * Fixed issue [#315](https://github.com/jakubpawlowicz/clean-css/issues/315) - `rgba`/`hsla` -> `transparent` in gradients.
 843
 844 [2.2.7 / 2014-07-10](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.6...v2.2.7)
 845 ==================
 846
 847 * Fixed issue [#304](https://github.com/jakubpawlowicz/clean-css/issues/304) - merging multiple backgrounds.
 848 * Fixed issue [#312](https://github.com/jakubpawlowicz/clean-css/issues/312) - merging with mixed repeat.
 849
 850 [2.2.6 / 2014-07-05](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.5...v2.2.6)
 851 ==================
 852
 853 * Adds faster quote matching in QuoteScanner.
 854 * Improves QuoteScanner to handle comments correctly.
 855 * Fixed issue [#308](https://github.com/jakubpawlowicz/clean-css/issues/308) - parsing comments in quoted URLs.
 856 * Fixed issue [#311](https://github.com/jakubpawlowicz/clean-css/issues/311) - leading/trailing decimal points.
 857
 858 [2.2.5 / 2014-06-29](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.4...v2.2.5)
 859 ==================
 860
 861 * Adds removing extra spaces around / in border-radius.
 862 * Adds replacing same horizontal & vertical value in border-radius.
 863 * Fixed issue [#305](https://github.com/jakubpawlowicz/clean-css/issues/305) - allows width keywords in `border-width`.
 864
 865 [2.2.4 / 2014-06-27](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.3...v2.2.4)
 866 ==================
 867
 868 * Fixed issue [#301](https://github.com/jakubpawlowicz/clean-css/issues/301) - proper `border-radius` processing.
 869 * Fixed issue [#303](https://github.com/jakubpawlowicz/clean-css/issues/303) - correctly preserves viewport units.
 870
 871 [2.2.3 / 2014-06-24](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.2...v2.2.3)
 872 ==================
 873
 874 * Fixed issue [#302](https://github.com/jakubpawlowicz/clean-css/issues/302) - handling of `outline-style: auto`.
 875
 876 [2.2.2 / 2014-06-18](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.1...v2.2.2)
 877 ==================
 878
 879 * Fixed issue [#297](https://github.com/jakubpawlowicz/clean-css/issues/297) - `box-shadow` zeros minification.
 880
 881 [2.2.1 / 2014-06-14](https://github.com/jakubpawlowicz/clean-css/compare/v2.2.0...v2.2.1)
 882 ==================
 883
 884 * Fixes new property optimizer for 'none' values.
 885 * Fixed issue [#294](https://github.com/jakubpawlowicz/clean-css/issues/294) - space after `rgba`/`hsla` in IE<=11.
 886
 887 [2.2.0 / 2014-06-11](https://github.com/jakubpawlowicz/clean-css/compare/v2.1.8...v2.2.0)
 888 ==================
 889
 890 * Adds a better algorithm for quotation marks' removal.
 891 * Adds a better non-adjacent optimizer compatible with the upcoming new property optimizer.
 892 * Adds minifying remote files directly from CLI.
 893 * Adds `--rounding-precision` to control rounding precision.
 894 * Moves quotation matching into a `QuoteScanner` class.
 895 * Adds `npm run browserify` for creating embeddable version of clean-css.
 896 * Fixed list-style-* advanced processing.
 897 * Fixed issue [#134](https://github.com/jakubpawlowicz/clean-css/issues/134) - merges properties into shorthand form.
 898 * Fixed issue [#164](https://github.com/jakubpawlowicz/clean-css/issues/164) - removes default values if not needed.
 899 * Fixed issue [#168](https://github.com/jakubpawlowicz/clean-css/issues/168) - adds better property merging algorithm.
 900 * Fixed issue [#173](https://github.com/jakubpawlowicz/clean-css/issues/173) - merges same properties if grouped.
 901 * Fixed issue [#184](https://github.com/jakubpawlowicz/clean-css/issues/184) - uses `!important` for optimization opportunities.
 902 * Fixed issue [#190](https://github.com/jakubpawlowicz/clean-css/issues/190) - uses shorthand to override another shorthand.
 903 * Fixed issue [#197](https://github.com/jakubpawlowicz/clean-css/issues/197) - adds borders merging by understandability.
 904 * Fixed issue [#210](https://github.com/jakubpawlowicz/clean-css/issues/210) - adds temporary workaround for aggressive merging.
 905 * Fixed issue [#246](https://github.com/jakubpawlowicz/clean-css/issues/246) - removes IE hacks when not in compatibility mode.
 906 * Fixed issue [#247](https://github.com/jakubpawlowicz/clean-css/issues/247) - removes deprecated `selectorsMergeMode` switch.
 907 * Refixed issue [#250](https://github.com/jakubpawlowicz/clean-css/issues/250) - based on new quotation marks removal.
 908 * Fixed issue [#257](https://github.com/jakubpawlowicz/clean-css/issues/257) - turns `rgba`/`hsla` to `transparent` if possible.
 909 * Fixed issue [#265](https://github.com/jakubpawlowicz/clean-css/issues/265) - adds support for multiple input files.
 910 * Fixed issue [#275](https://github.com/jakubpawlowicz/clean-css/issues/275) - handling transform properties.
 911 * Fixed issue [#276](https://github.com/jakubpawlowicz/clean-css/issues/276) - corrects unicode handling.
 912 * Fixed issue [#288](https://github.com/jakubpawlowicz/clean-css/issues/288) - adds smarter expression parsing.
 913 * Fixed issue [#293](https://github.com/jakubpawlowicz/clean-css/issues/293) - handles escaped `@` symbols in class names and IDs.
 914
 915 [2.1.8 / 2014-03-28](https://github.com/jakubpawlowicz/clean-css/compare/v2.1.7...v2.1.8)
 916 ==================
 917
 918 * Fixed issue [#267](https://github.com/jakubpawlowicz/clean-css/issues/267) - incorrect non-adjacent selector merging.
 919
 920 [2.1.7 / 2014-03-24](https://github.com/jakubpawlowicz/clean-css/compare/v2.1.6...v2.1.7)
 921 ==================
 922
 923 * Fixed issue [#264](https://github.com/jakubpawlowicz/clean-css/issues/264) - `@import` statements inside comments.
 924
 925 [2.1.6 / 2014-03-10](https://github.com/jakubpawlowicz/clean-css/compare/v2.1.5...v2.1.6)
 926 ==================
 927
 928 * Fixed issue [#258](https://github.com/jakubpawlowicz/clean-css/issues/258) - wrong `@import` handling in `EmptyRemoval`.
 929
 930 [2.1.5 / 2014-03-07](https://github.com/jakubpawlowicz/clean-css/compare/v2.1.4...v2.1.5)
 931 ==================
 932
 933 * Fixed issue [#255](https://github.com/jakubpawlowicz/clean-css/issues/255) - incorrect processing of a trailing `-0`.
 934
 935 [2.1.4 / 2014-03-01](https://github.com/jakubpawlowicz/clean-css/compare/v2.1.3...v2.1.4)
 936 ==================
 937
 938 * Fixed issue [#250](https://github.com/jakubpawlowicz/clean-css/issues/250) - correctly handle JSON data in quotations.
 939
 940 [2.1.3 / 2014-02-26](https://github.com/jakubpawlowicz/clean-css/compare/v2.1.2...v2.1.3)
 941 ==================
 942
 943 * Fixed issue [#248](https://github.com/jakubpawlowicz/clean-css/issues/248) - incorrect merging for vendor selectors.
 944
 945 [2.1.2 / 2014-02-25](https://github.com/jakubpawlowicz/clean-css/compare/v2.1.1...v2.1.2)
 946 ==================
 947
 948 * Fixed issue [#245](https://github.com/jakubpawlowicz/clean-css/issues/245) - incorrect handling of backslash IE hack.
 949
 950 [2.1.1 / 2014-02-18](https://github.com/jakubpawlowicz/clean-css/compare/v2.1.0...v2.1.1)
 951 ==================
 952
 953 * Adds faster selectors processing in advanced optimizer.
 954 * Fixed issue [#241](https://github.com/jakubpawlowicz/clean-css/issues/241) - incorrect handling of `:not()` selectors.
 955
 956 [2.1.0 / 2014-02-13](https://github.com/jakubpawlowicz/clean-css/compare/v2.0.8...v2.1.0)
 957 ==================
 958
 959 * Adds an optional callback to minify method.
 960 * Deprecates `--selectors-merge-mode` / `selectorsMergeMode` in favor to `--compatibility` / `compatibility`.
 961 * Fixes debug mode stats for stylesheets using `@import` statements.
 962 * Skips empty removal if advanced processing is enabled.
 963 * Fixed issue [#85](https://github.com/jakubpawlowicz/clean-css/issues/85) - resolving protocol `@import`s.
 964 * Fixed issue [#160](https://github.com/jakubpawlowicz/clean-css/issues/160) - re-runs optimizer until a clean pass.
 965 * Fixed issue [#161](https://github.com/jakubpawlowicz/clean-css/issues/161) - improves tokenizer performance.
 966 * Fixed issue [#163](https://github.com/jakubpawlowicz/clean-css/issues/163) - round pixels to 2nd decimal place.
 967 * Fixed issue [#165](https://github.com/jakubpawlowicz/clean-css/issues/165) - extra space after trailing parenthesis.
 968 * Fixed issue [#186](https://github.com/jakubpawlowicz/clean-css/issues/186) - strip unit from `0rem`.
 969 * Fixed issue [#207](https://github.com/jakubpawlowicz/clean-css/issues/207) - bug in parsing protocol `@import`s.
 970 * Fixed issue [#213](https://github.com/jakubpawlowicz/clean-css/issues/213) - faster `rgb` to `hex` transforms.
 971 * Fixed issue [#215](https://github.com/jakubpawlowicz/clean-css/issues/215) - leading zeros in numerical values.
 972 * Fixed issue [#217](https://github.com/jakubpawlowicz/clean-css/issues/217) - whitespace inside attribute selectors and URLs.
 973 * Fixed issue [#218](https://github.com/jakubpawlowicz/clean-css/issues/218) - `@import` statements cleanup.
 974 * Fixed issue [#220](https://github.com/jakubpawlowicz/clean-css/issues/220) - selector between comments.
 975 * Fixed issue [#223](https://github.com/jakubpawlowicz/clean-css/issues/223) - two-pass adjacent selectors merging.
 976 * Fixed issue [#226](https://github.com/jakubpawlowicz/clean-css/issues/226) - don't minify `border:none` to `border:0`.
 977 * Fixed issue [#229](https://github.com/jakubpawlowicz/clean-css/issues/229) - improved processing of fraction numbers.
 978 * Fixed issue [#230](https://github.com/jakubpawlowicz/clean-css/issues/230) - better handling of zero values.
 979 * Fixed issue [#235](https://github.com/jakubpawlowicz/clean-css/issues/235) - IE7 compatibility mode.
 980 * Fixed issue [#236](https://github.com/jakubpawlowicz/clean-css/issues/236) - incorrect rebasing with nested `import`s.
 981
 982 [2.0.8 / 2014-02-07](https://github.com/jakubpawlowicz/clean-css/compare/v2.0.7...v2.0.8)
 983 ==================
 984
 985 * Fixed issue [#232](https://github.com/jakubpawlowicz/clean-css/issues/232) - edge case in non-adjacent selectors merging.
 986
 987 [2.0.7 / 2014-01-16](https://github.com/jakubpawlowicz/clean-css/compare/v2.0.6...v2.0.7)
 988 ==================
 989
 990 * Fixed issue [#208](https://github.com/jakubpawlowicz/clean-css/issues/208) - don't swallow `@page` and `@viewport`.
 991
 992 [2.0.6 / 2014-01-04](https://github.com/jakubpawlowicz/clean-css/compare/v2.0.5...v2.0.6)
 993 ==================
 994
 995 * Fixed issue [#198](https://github.com/jakubpawlowicz/clean-css/issues/198) - process comments and `@import`s correctly.
 996 * Fixed issue [#205](https://github.com/jakubpawlowicz/clean-css/issues/205) - freeze on broken `@import` declaration.
 997
 998 [2.0.5 / 2014-01-03](https://github.com/jakubpawlowicz/clean-css/compare/v2.0.4...v2.0.5)
 999 ==================
1000
1001 * Fixed issue [#199](https://github.com/jakubpawlowicz/clean-css/issues/199) - keep line breaks with no advanced optimizations.
1002 * Fixed issue [#203](https://github.com/jakubpawlowicz/clean-css/issues/203) - Buffer as a first argument to minify method.
1003
1004 [2.0.4 / 2013-12-19](https://github.com/jakubpawlowicz/clean-css/compare/v2.0.3...v2.0.4)
1005 ==================
1006
1007 * Fixed issue [#193](https://github.com/jakubpawlowicz/clean-css/issues/193) - HSL color space normalization.
1008
1009 [2.0.3 / 2013-12-18](https://github.com/jakubpawlowicz/clean-css/compare/v2.0.2...v2.0.3)
1010 ==================
1011
1012 * Fixed issue [#191](https://github.com/jakubpawlowicz/clean-css/issues/191) - leading numbers in `font`/`animation` names.
1013 * Fixed issue [#192](https://github.com/jakubpawlowicz/clean-css/issues/192) - many `@import`s inside a comment.
1014
1015 [2.0.2 / 2013-11-18](https://github.com/jakubpawlowicz/clean-css/compare/v2.0.1...v2.0.2)
1016 ==================
1017
1018 * Fixed issue [#177](https://github.com/jakubpawlowicz/clean-css/issues/177) - process broken content correctly.
1019
1020 [2.0.1 / 2013-11-14](https://github.com/jakubpawlowicz/clean-css/compare/v2.0.0...v2.0.1)
1021 ==================
1022
1023 * Fixed issue [#176](https://github.com/jakubpawlowicz/clean-css/issues/176) - hangs on `undefined` keyword.
1024
1025 [2.0.0 / 2013-11-04](https://github.com/jakubpawlowicz/clean-css/compare/v1.1.7...v2.0.0)
1026 ==================
1027
1028 * Adds simplified and more advanced text escaping / restoring via `EscapeStore` class.
1029 * Adds simplified and much faster empty elements removal.
1030 * Adds missing `@import` processing to our benchmark (run via `npm run bench`).
1031 * Adds CSS tokenizer which will make it possible to optimize content by reordering and/or merging selectors.
1032 * Adds basic optimizer removing duplicate selectors from a list.
1033 * Adds merging duplicate properties within a single selector's body.
1034 * Adds merging adjacent selectors within a scope (single and multiple ones).
1035 * Changes behavior of `--keep-line-breaks`/`keepBreaks` option to keep breaks after trailing braces only.
1036 * Makes all multiple selectors ordered alphabetically (aids merging).
1037 * Adds property overriding so more coarse properties override more granular ones.
1038 * Adds reducing non-adjacent selectors.
1039 * Adds `--skip-advanced`/`noAdvanced` switch to disable advanced optimizations.
1040 * Adds reducing non-adjacent selectors when overridden by more complex selectors.
1041 * Fixed issue [#138](https://github.com/jakubpawlowicz/clean-css/issues/138) - makes CleanCSS interface OO.
1042 * Fixed issue [#139](https://github.com/jakubpawlowicz/clean-css/issues/138) - consistent error & warning handling.
1043 * Fixed issue [#145](https://github.com/jakubpawlowicz/clean-css/issues/145) - debug mode in library too.
1044 * Fixed issue [#157](https://github.com/jakubpawlowicz/clean-css/issues/157) - gets rid of `removeEmpty` option.
1045 * Fixed issue [#159](https://github.com/jakubpawlowicz/clean-css/issues/159) - escaped quotes inside content.
1046 * Fixed issue [#162](https://github.com/jakubpawlowicz/clean-css/issues/162) - strip quotes from Base64 encoded URLs.
1047 * Fixed issue [#166](https://github.com/jakubpawlowicz/clean-css/issues/166) - `debug` formatting in CLI
1048 * Fixed issue [#167](https://github.com/jakubpawlowicz/clean-css/issues/167) - `background:transparent` minification.
1049
1050 [1.1.7 / 2013-10-28](https://github.com/jakubpawlowicz/clean-css/compare/v1.1.6...v1.1.7)
1051 ==================
1052
1053 * Fixed issue [#156](https://github.com/jakubpawlowicz/clean-css/issues/156) - `@import`s inside comments.
1054
1055 [1.1.6 / 2013-10-26](https://github.com/jakubpawlowicz/clean-css/compare/v1.1.5...v1.1.6)
1056 ==================
1057
1058 * Fixed issue [#155](https://github.com/jakubpawlowicz/clean-css/issues/155) - broken irregular CSS content.
1059
1060 [1.1.5 / 2013-10-24](https://github.com/jakubpawlowicz/clean-css/compare/v1.1.4...v1.1.5)
1061 ==================
1062
1063 * Fixed issue [#153](https://github.com/jakubpawlowicz/clean-css/issues/153) - `keepSpecialComments` `0`/`1` as a string.
1064
1065 [1.1.4 / 2013-10-23](https://github.com/jakubpawlowicz/clean-css/compare/v1.1.3...v1.1.4)
1066 ==================
1067
1068 * Fixed issue [#152](https://github.com/jakubpawlowicz/clean-css/issues/152) - adds an option to disable rebasing.
1069
1070 [1.1.3 / 2013-10-04](https://github.com/jakubpawlowicz/clean-css/compare/v1.1.2...v1.1.3)
1071 ==================
1072
1073 * Fixed issue [#150](https://github.com/jakubpawlowicz/clean-css/issues/150) - minifying `background:none`.
1074
1075 [1.1.2 / 2013-09-29](https://github.com/jakubpawlowicz/clean-css/compare/v1.1.1...v1.1.2)
1076 ==================
1077
1078 * Fixed issue [#149](https://github.com/jakubpawlowicz/clean-css/issues/149) - shorthand `font` property.
1079
1080 [1.1.1 / 2013-09-07](https://github.com/jakubpawlowicz/clean-css/compare/v1.1.0...v1.1.1)
1081 ==================
1082
1083 * Fixed issue [#144](https://github.com/jakubpawlowicz/clean-css/issues/144) - skip URLs rebasing by default.
1084
1085 [1.1.0 / 2013-09-06](https://github.com/jakubpawlowicz/clean-css/compare/v1.0.12...v1.1.0)
1086 ==================
1087
1088 * Renamed lib's `debug` option to `benchmark` when doing per-minification benchmarking.
1089 * Added simplified comments processing & imports.
1090 * Fixed issue [#43](https://github.com/jakubpawlowicz/clean-css/issues/43) - `--debug` switch for minification stats.
1091 * Fixed issue [#65](https://github.com/jakubpawlowicz/clean-css/issues/65) - full color name / hex shortening.
1092 * Fixed issue [#84](https://github.com/jakubpawlowicz/clean-css/issues/84) - support for `@import` with media queries.
1093 * Fixed issue [#124](https://github.com/jakubpawlowicz/clean-css/issues/124) - raise error on broken imports.
1094 * Fixed issue [#126](https://github.com/jakubpawlowicz/clean-css/issues/126) - proper CSS expressions handling.
1095 * Fixed issue [#129](https://github.com/jakubpawlowicz/clean-css/issues/129) - rebasing imported URLs.
1096 * Fixed issue [#130](https://github.com/jakubpawlowicz/clean-css/issues/130) - better code modularity.
1097 * Fixed issue [#135](https://github.com/jakubpawlowicz/clean-css/issues/135) - require node.js 0.8+.
1098
1099 [1.0.12 / 2013-07-19](https://github.com/jakubpawlowicz/clean-css/compare/v1.0.11...v1.0.12)
1100 ===================
1101
1102 * Fixed issue [#121](https://github.com/jakubpawlowicz/clean-css/issues/121) - ability to skip `@import` processing.
1103
1104 [1.0.11 / 2013-07-08](https://github.com/jakubpawlowicz/clean-css/compare/v1.0.10...v1.0.11)
1105 ===================
1106
1107 * Fixed issue [#117](https://github.com/jakubpawlowicz/clean-css/issues/117) - line break escaping in comments.
1108
1109 [1.0.10 / 2013-06-13](https://github.com/jakubpawlowicz/clean-css/compare/v1.0.9...v1.0.10)
1110 ===================
1111
1112 * Fixed issue [#114](https://github.com/jakubpawlowicz/clean-css/issues/114) - comments in imported stylesheets.
1113
1114 [1.0.9 / 2013-06-11](https://github.com/jakubpawlowicz/clean-css/compare/v1.0.8...v1.0.9)
1115 ==================
1116
1117 * Fixed issue [#113](https://github.com/jakubpawlowicz/clean-css/issues/113) - `@import` in comments.
1118
1119 [1.0.8 / 2013-06-10](https://github.com/jakubpawlowicz/clean-css/compare/v1.0.7...v1.0.8)
1120 ==================
1121
1122 * Fixed issue [#112](https://github.com/jakubpawlowicz/clean-css/issues/112) - reducing `box-shadow` zeros.
1123
1124 [1.0.7 / 2013-06-05](https://github.com/jakubpawlowicz/clean-css/compare/v1.0.6...v1.0.7)
1125 ==================
1126
1127 * Support for `@import` URLs starting with `//`. By [@petetak](https://github.com/petetak).
1128
1129 [1.0.6 / 2013-06-04](https://github.com/jakubpawlowicz/clean-css/compare/v1.0.5...v1.0.6)
1130 ==================
1131
1132 * Fixed issue [#110](https://github.com/jakubpawlowicz/clean-css/issues/110) - data URIs in URLs.
1133
1134 [1.0.5 / 2013-05-26](https://github.com/jakubpawlowicz/clean-css/compare/v1.0.4...v1.0.5)
1135 ==================
1136
1137 * Fixed issue [#107](https://github.com/jakubpawlowicz/clean-css/issues/107) - data URIs in imported stylesheets.
1138
1139 1.0.4 / 2013-05-23
1140 ==================
1141
1142 * Rewrite relative URLs in imported stylesheets. By [@bluej100](https://github.com/bluej100).
1143
1144 1.0.3 / 2013-05-20
1145 ==================
1146
1147 * Support alternative `@import` syntax with file name not wrapped inside `url()` statement.
1148   By [@bluej100](https://github.com/bluej100).
1149
1150 1.0.2 / 2013-04-29
1151 ==================
1152
1153 * Fixed issue [#97](https://github.com/jakubpawlowicz/clean-css/issues/97) - `--remove-empty` & FontAwesome.
1154
1155 1.0.1 / 2013-04-08
1156 ==================
1157
1158 * Do not pick up `bench` and `test` while building `npm` package.
1159   By [@sindresorhus](https://https://github.com/sindresorhus).
1160
1161 1.0.0 / 2013-03-30
1162 ==================
1163
1164 * Fixed issue [#2](https://github.com/jakubpawlowicz/clean-css/issues/2) - resolving `@import` rules.
1165 * Fixed issue [#44](https://github.com/jakubpawlowicz/clean-css/issues/44) - examples in `--help`.
1166 * Fixed issue [#46](https://github.com/jakubpawlowicz/clean-css/issues/46) - preserving special characters in URLs and attributes.
1167 * Fixed issue [#80](https://github.com/jakubpawlowicz/clean-css/issues/80) - quotation in multi line strings.
1168 * Fixed issue [#83](https://github.com/jakubpawlowicz/clean-css/issues/83) - HSL to hex color conversions.
1169 * Fixed issue [#86](https://github.com/jakubpawlowicz/clean-css/issues/86) - broken `@charset` replacing.
1170 * Fixed issue [#88](https://github.com/jakubpawlowicz/clean-css/issues/88) - removes space in `! important`.
1171 * Fixed issue [#92](https://github.com/jakubpawlowicz/clean-css/issues/92) - uppercase hex to short versions.
1172
1173 0.10.2 / 2013-03-19
1174 ===================
1175
1176 * Fixed issue [#79](https://github.com/jakubpawlowicz/clean-css/issues/79) - node.js 0.10.x compatibility.
1177
1178 0.10.1 / 2013-02-14
1179 ===================
1180
1181 * Fixed issue [#66](https://github.com/jakubpawlowicz/clean-css/issues/66) - line breaks without extra spaces should
1182   be handled correctly.
1183
1184 0.10.0 / 2013-02-09
1185 ===================
1186
1187 * Switched from [optimist](https://github.com/substack/node-optimist) to
1188   [commander](https://github.com/visionmedia/commander.js) for CLI processing.
1189 * Changed long options from `--removeempty` to `--remove-empty` and from `--keeplinebreaks` to `--keep-line-breaks`.
1190 * Fixed performance issue with replacing multiple `@charset` declarations and issue
1191   with line break after `@charset` when using `keepLineBreaks` option. By [@rrjaime](https://github.com/rrjamie).
1192 * Removed Makefile in favor to `npm run` commands (e.g. `make check` -> `npm run check`).
1193 * Fixed issue [#47](https://github.com/jakubpawlowicz/clean-css/issues/47) - commandline issues on Windows.
1194 * Fixed issue [#49](https://github.com/jakubpawlowicz/clean-css/issues/49) - remove empty selectors from media query.
1195 * Fixed issue [#52](https://github.com/jakubpawlowicz/clean-css/issues/52) - strip fraction zeros if not needed.
1196 * Fixed issue [#58](https://github.com/jakubpawlowicz/clean-css/issues/58) - remove colon where possible.
1197 * Fixed issue [#59](https://github.com/jakubpawlowicz/clean-css/issues/59) - content property handling.
1198
1199 0.9.1 / 2012-12-19
1200 ==================
1201
1202 * Fixed issue [#37](https://github.com/jakubpawlowicz/clean-css/issues/37) - converting
1203   `white` and other colors in class names (reported by [@malgorithms](https://github.com/malgorithms)).
1204
1205 0.9.0 / 2012-12-15
1206 ==================
1207
1208 * Added stripping quotation from font names (if possible).
1209 * Added stripping quotation from `@keyframes` declaration, `animation` and
1210   `animation-name` property.
1211 * Added stripping quotations from attributes' value (e.g. `[data-target='x']`).
1212 * Added better hex->name and name->hex color shortening.
1213 * Added `font: normal` and `font: bold` shortening the same way as `font-weight` is.
1214 * Refactored shorthand selectors and added `border-radius`, `border-style`
1215   and `border-color` shortening.
1216 * Added `margin`, `padding` and `border-width` shortening.
1217 * Added removing line break after commas.
1218 * Fixed removing whitespace inside media query definition.
1219 * Added removing line breaks after a comma, so all declarations are one-liners now.
1220 * Speed optimizations (~10% despite many new features).
1221 * Added [JSHint](https://github.com/jshint/jshint/) validation rules via `make check`.
1222
1223 0.8.3 / 2012-11-29
1224 ==================
1225
1226 * Fixed HSL/HSLA colors processing.
1227
1228 0.8.2 / 2012-10-31
1229 ==================
1230
1231 * Fixed shortening hex colors and their relation to hashes in URLs.
1232 * Cleanup by [@XhmikosR](https://github.com/XhmikosR).
1233
1234 0.8.1 / 2012-10-28
1235 ==================
1236
1237 * Added better zeros processing for `rect(...)` syntax (clip property).
1238
1239 0.8.0 / 2012-10-21
1240 ==================
1241
1242 * Added removing URLs quotation if possible.
1243 * Rewrote breaks processing.
1244 * Added `keepBreaks`/`-b` option to keep line breaks in the minimized file.
1245 * Reformatted [lib/clean.js](/lib/clean.js) so it's easier to follow the rules.
1246 * Minimized test data is now minimized with line breaks so it's easier to
1247   compare the changes line by line.
1248
1249 0.7.0 / 2012-10-14
1250 ==================
1251
1252 * Added stripping special comments to CLI (`--s0` and `--s1` options).
1253 * Added stripping special comments to programmatic interface
1254   (`keepSpecialComments` option).
1255
1256 0.6.0 / 2012-08-05
1257 ==================
1258
1259 * Full Windows support with tests (./test.bat).
1260
1261 0.5.0 / 2012-08-02
1262 ==================
1263
1264 * Made path to vows local.
1265 * Explicit node.js 0.6 requirement.
1266
1267 0.4.2 / 2012-06-28
1268 ==================
1269
1270 * Updated binary `-v` option (version).
1271 * Updated binary to output help when no options given (but not in piped mode).
1272 * Added binary tests.
1273
1274 0.4.1 / 2012-06-10
1275 ==================
1276
1277 * Fixed stateless mode where calling `CleanCSS#process` directly was giving
1278   errors (reported by [@facelessuser](https://github.com/facelessuser)).
1279
1280 0.4.0 / 2012-06-04
1281 ==================
1282
1283 * Speed improvements up to 4x thanks to the rewrite of comments and CSS' content
1284   processing.
1285 * Stripping empty CSS tags is now optional (see [bin/cleancss](/bin/cleancss) for details).
1286 * Improved debugging mode (see [test/bench.js](/test/bench.js))
1287 * Added `make bench` for a one-pass benchmark.
1288
1289 0.3.3 / 2012-05-27
1290 ==================
1291
1292 * Fixed tests, [package.json](/package.json) for development, and regex
1293   for removing empty declarations (thanks to [@vvo](https://github.com/vvo)).
1294
1295 0.3.2 / 2012-01-17
1296 ==================
1297
1298 * Fixed output method under node.js 0.6 which incorrectly tried to close
1299   `process.stdout`.
1300
1301 0.3.1 / 2011-12-16
1302 ==================
1303
1304 * Fixed cleaning up `0 0 0 0` expressions.
1305
1306 0.3.0 / 2011-11-29
1307 ==================
1308
1309 * Clean-css requires node.js 0.4.0+ to run.
1310 * Removed node.js's 0.2.x 'sys' package dependency
1311   (thanks to [@jmalonzo](https://github.com/jmalonzo) for a patch).
1312
1313 0.2.6 / 2011-11-27
1314 ==================
1315
1316 * Fixed expanding `+` signs in `calc()` when mixed up with adjacent `+` selector.
1317
1318 0.2.5 / 2011-11-27
1319 ==================
1320
1321 * Fixed issue with cleaning up spaces inside `calc`/`-moz-calc` declarations
1322   (thanks to [@cvan](https://github.com/cvan) for reporting it).
1323 * Fixed converting `#f00` to `red` in borders and gradients.
1324
1325 0.2.4 / 2011-05-25
1326 ==================
1327
1328 * Fixed problem with expanding `none` to `0` in partial/full background
1329   declarations.
1330 * Fixed including clean-css library from binary (global to local).
1331
1332 0.2.3 / 2011-04-18
1333 ==================
1334
1335 * Fixed problem with optimizing IE filters.
1336
1337 0.2.2 / 2011-04-17
1338 ==================
1339
1340 * Fixed problem with space before color in `border` property.
1341
1342 0.2.1 / 2011-03-19
1343 ==================
1344
1345 * Added stripping space before `!important` keyword.
1346 * Updated repository location and author information in [package.json](/package.json).
1347
1348 0.2.0 / 2011-03-02
1349 ==================
1350
1351 * Added options parsing via optimist.
1352 * Changed code inclusion (thus the version bump).
1353
1354 0.1.0 / 2011-02-27
1355 ==================
1356
1357 * First version of clean-css library.
1358 * Implemented all basic CSS transformations.