Fix tests
Improve php-capability: add support [] in list()
Fix static statement, fix empty, isset for var-var
Improve php-capability: add support var-var in global statements
Rm outdated docs
Update README.md
Merge pull request #97 from POPSuL/patch-1

Update README.md
Speed up calls of public static methods and functions
Fix bug and optimize allocation of cache data
Merge pull request #98 from jphp-compiler/cached-calls

Speed up calls of public static methods and functions
Add optimize for private and public methods
Fix working with multi-environment behaviour
Merge pull request #99 from jphp-compiler/cached-calls

Add optimize for private and public methods
Merge branch 'master' into std-lib