autoprefixer support
pass browsers as array to autoprefixer filter
redirect autoprefixer output to file due to proc_open bug on windows
removed duplicate output option
Explicitly specify fonts directory

Fixes a bug where the fonts directory was specified in the compass configuration. The compass configuration assumes assumes the directory is a  relative path from the specified project path (currently `sys_get_temp_dir()`).
Compass filter: added support for --relative-assets option
css cache busting filter
Copied code for the compass asset dependencies detection (PR #362) from the SassFilter Class.
Methods copied: getChildren, partialize
Added --no-header option for Coffeescript

--no-header, suppresses the "Generated by" header
Merge pull request #2 from kriswallsmith/master

Removed the download of the cssembed jar as the url does not work anymor...
Added test for --no-header functionality
Added compress options for UglifyJS
Created a test to verify commented imports are not imported
add function to set variables in scss parser
Update ScssPhpFilter.php

Class replacement for new ScssPhp structure
Merge remote-tracking branch 'upstream/master'
Merge pull request #634 from wgriffioen/master

Created a test to verify commented imports are not imported
add minifycsscompressor filter

fix license and class phpdoc
Merge pull request #472 from mente/autoprefixer

autoprefixer support
fixed autoprefixer unit tests introduced in #472