Fixes #542 - space after closing brace in IE.

Fixes #542 - space after closing brace in IE.

Starting with version 3.3 this feature will be disabled since:

* it apparently does not work in IE9 where removing the space will
  always break content.
* in IE 10 it works only inside `background`, `transform` and `src`
  properties.

Once we switch to supporting (just 2 latest versions) we will likely turn
it on again.