fixed bug that happened when removing an entity from the world and calling world.processEntityChanges and adding a new entity with the same id afterwards *because of this bug the new entity lost all its components)
fixed typo
added _ensureCapacity method
Merge branch 'master' into development
using _ensureCapacity in ComponentManager
cleanup and fixes in FastMath, closes #17
removed class Timer
Merge branch 'development' of https://github.com/denniskaselow/dartemis into development