Improved collision system
Merge branch 'master' of https://github.com/azatris/zed

Conflicts:
	Assets/Scenes/scene.unity
Merge branch 'master' of https://github.com/azatris/zed

Conflicts:
	Assets/Prefabs/MiniTurret.prefab
	Assets/Scenes/scene.unity
	ProjectSettings/Physics2DSettings.asset