Fix #498 Issue about SplFileInfo
Added tests for extends of Spl supported classes
Support more stl classes (with tests)
Fix #502 about abstract classes use interface methods
Updated
Anonymous functions/closures support at parsing level
Anonymous functions/closures support at parsing level (2)
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
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
Removed "abstract" duplication in parser
Fixed typo "assigment" -> "assignment"