Fix #498 Issue about SplFileInfo
Added tests for extends of Spl supported classes
Support more stl classes (with tests)
Anonymous functions/closures support at parsing level
Merge pull request #499 from ovr/498_issue

Fix #498 and support more STL clases
Anonymous functions/closures support at parsing level (2)
Merge branch 'master' of https://github.com/phalcon/zephir
Anonymous functions/closures support at parsing level (3)
Adding Zephir\Closure to create closures
Adding initial closure tests
More tests for Closures
TDD #506 Issue
Fix #506 Issue about string escape in ThrowStatement for message
Merge pull request #512 from ovr/506_issue

506 issue
Introducing filesystem abstraction, fixed escaping of single quotes in strings, improved closure support
PSR2 fixes
Cache md5hashes to improve performance
Fixed class escaping, added Apc filesystem
Added Redis filesystem