Added obstacles in world 3. Added mesh-collider type obstacles. New behaviors of obstacles are added.
Merge branch 'master' of github.com:haxpor/LD27

Conflicts:
	unityproj/Assets/game_assets/level_plane_textures.meta
	unityproj/Assets/game_assets/level_plane_textures/lvl1.jpg.meta
	unityproj/Assets/game_assets/level_plane_textures/lvl2.jpg.meta
	unityproj/Assets/game_assets/level_plane_textures/lvl3.jpg.meta
	unityproj/Assets/game_assets/level_plane_textures/lvl4.jpg.meta
	unityproj/Assets/game_assets/level_plane_textures/lvl5.jpg.meta
	unityproj/Assets/game_assets/level_plane_textures/lvl6.jpg.meta
	unityproj/Assets/game_assets/level_plane_textures/lvl7.jpg.meta
	unityproj/Assets/game_assets/level_plane_textures/lvl8.jpg.meta
	unityproj/Assets/game_assets/level_plane_textures/lvl9.jpg.meta