1.1.2 (July 18, 2013)
  -------------------
  
   * Fixed deep mtime on asset collections
   * `CallablesFilter` now implements `DependencyExtractorInterface`
   * Fixed detection of "partial" children in subfolders in `SassFilter`
   * Restored `PathUtils` for BC
  
  1.1.1 (June 1, 2013)
  --------------------
  
   * Fixed cloning of asset collections
   * Fixed environment var inheritance
   * Replaced `AssetWriter::getCombinations()` for BC, even though we don't use it
   * Added support for `@import-once` to Less filters
  
  1.1.0 (May 15, 2013)
  --------------------
  
   * Added LazyAssetManager::getLastModified() for determining "deep" mtime
   * Added DartFilter
   * Added EmberPrecompile
   * Added GssFilter
   * Added PhpCssEmbedFilter
   * Added RooleFilter
   * Added TypeScriptFilter
   * Added the possibility to configure additional load paths for less and lessphp
   * Added the UglifyCssFilter
   * Fixed the handling of directories in the GlobAsset. #256
   * Added Handlebars support
   * Added Scssphp-compass support
   * Added the CacheBustingWorker
   * Added the UglifyJs2Filter
  
  1.1.0-alpha1 (August 28, 2012)
  ------------------------------
  
   * Added pure php css embed filter
   * Added Scssphp support
   * Added support for Google Closure language option
   * Added a way to set a specific ruby path for CompassFilter and SassFilter
   * Ensure uniqueness of temporary files created by the compressor filter. Fixed #61
   * Added Compass option for generated_images_path (for generated Images/Sprites)
   * Added PackerFilter
   * Add the way to contact closure compiler API using curl, if available and allow_url_fopen is off
   * Added filters for JSMin and JSMinPlus
   * Added the UglifyJsFilter
   * Improved the error message in getModifiedTime when a file asset uses an invalid file
   * added support for asset variables:
  
         Asset variables allow you to pre-compile your assets for a finite set of known
         variable values, and then to simply deliver the correct asset version at runtime.
         For example, this is helpful for assets with language, or browser-specific code.
   * Removed the copy-paste of the Symfony2 Process component and use the original one
   * Added ability to pass variables into lessphp filter
   * Added google closure stylesheets jar filter
   * Added the support of `--bare` for the CoffeeScriptFilter