Merge pull request appserver-io#7 from wagnert/master

Refactoring to work with PHP 7

Switch to latest appserver-io/lang branch ~3.0

Merge pull request appserver-io#4 from wagnert/master

Replace array_key_exists() with isset() where possible

Merge pull request appserver-io#3 from wick-ed/master

Bugfix: un-initialized collections within multi threading contexts

Switched to stable dependencies due to version 1.0.0 release

applied new coding conventions + several bugfixes

Initial release after move from techdivision/TechDivision_Collections