Fixed dart-sdk in travis.yml
Updated download path for closure compiler in .travis.yml
Fix UglifyJs2 filter test
Merge pull request #546 from pierredup/travis

Fix Travis builds
Add pngout for travis
Merge pull request #547 from pierredup/pngout

Add pngout for travis
Updated year in License and License headers
Merge pull request #554 from danielcsgomes/master

Updated year in License and License headers
implemented getChildren for ScssPHP filter
rename  (less compiler) to  (scss compiler)
Merge pull request #555 from SamsonIT/rename_scss_variable

rename $lc (less compiler) to $sc (scss compiler)
add JSqueeze support
Merge pull request #561 from nicolas-grekas/jsqueeze

add JSqueeze support
recursively find dependencies
added test
renamed attribute StringAsset->$content to StringAsset->$string to avoid serialization issues with BaseAsset->$content
Merge pull request #565 from shaula/master

renamed attribute StringAsset->$content to StringAsset->$string to ...
updated JSqueezeFilter namespace

In the core provided filters namespace list changed:
JSqueeze to JSqueezeFilter
Merge pull request #581 from renarsvilnis/patch-1

updated JSqueezeFilter namespace
treat embedded templates as child nodes in TwigFormulaLoader.