Dependency messing

Using Greenkeeper now to keep everything in check.

Deprecated: Exposed property engine.entityList should no longer be used. Instead whole engine is using Iterator interface. See #22 and #31 for details.

Bug fixing

Fixes small bug #3 with processing action type without any handler being registered.

Going public

First public release since private development of the framework. It is considered mostly finished, but may require some polishing and bug fixing before making it production ready.