feat(bt): added behaviour tree framework
Merge branch 'master' into feature-aibt

Conflicts:
	Classes/GameScene.cpp
	Classes/GameScene.h

proj.ios/halloween.xcodeproj/project.xcworkspace/xcuserdata/neonaleon.xc
userdatad/UserInterfaceState.xcuserstate
feat(aibt): added composite nodes and placeholders
feat(behaviours): added placeholders for MeleeUnitBehaviour
feat(aibt): completed BT nodes and added behaviours
feat(decorator): added IntervalDecorator
chore(refactor): removed a debug log
fix(composites): fixed logic issues with composite nodes
feat(behaviour): completed MeleeUnitBehavior
Merge branch 'master' into feature-aibt
Merge branch 'feature-aibt'