Version 2.x
This is the 2017 version of IGE and is based on the "appCore" branch in git and is a relatively large re-write of many areas of the engine to allow for automatic dependency injection in your code, much simpler navigation of your game scenes etc.
It is modelled after AngularJS in the way dependency injection works and modelled after ui-router for how routing works, although it doesn't include either of those libraries.