add intellij .idea ignore
add intellij .idea ignore
added listenable shellscene
automatically add nodes to the scene
add .idea folder to gitignore
explecitly use maven compiler plugin v3.0 to fix broken maven from ubuntu repo
keep track of child stacking (=z) order in parent
(re)format some source
Remove redundant implements
Merge branch '0.0.2-SNAPSHOT' into xcomposite

Conflicts:
	.gitignore