indent in PCH
Added unit test for #636
Added unit test for #636
Fix CSS cascade for single classes by allowing natural inheritance

We fixed this case for complex selectors earlier but missed this. Fortunately this
actually requires less work since inheritance is already handled by DTCoreText.

Also fixed the test case (the array returned with an empty line causing the test to fail).
Merge pull request #644 from amro/fix_css_single_class_inheritance

Fix css single class inheritance
add weight tests
Merge pull request #645 from amro/improve_css_code_coverage

Add weight tests
Added unit tests for CSS shorthand uncompression
Removed left over NSLog
fixed a bug uncompressing font shorthand
added font uncompression unit test
Added further font uncompressing unit test
Added more details to font shorthand decompression unit test
excluded some descriptions from coverage
added serial queue
cleaned up synchronization in layouter
reindented
Added synchronization to layout frame
removed layout queue, since we’re synchronizing via @synchronize
Merge branch 'od/issue_606' into develop