[New] tower defense game template and Bird Flying template
[New] Tiled map format support
[New] WeChat sharing
[New] turret behavior, conditions, actions
[New] Path finding behavior, conditions, actions
[New] Node movement behavior, conditions, actions
[New] Touch screen component conditions, actions
[New] More related functions of text, button component
[New] Optimized the user experience of scene editing
[Fix] game layer bug
[Fix] Bug caused by multiple conditions and trigger conditions