v2.0 
- Re-create : Game Engine changed(cocos2d->Unity3d)
- Support : macOS Big Sur
- Change : copyright message
Notes: Existing data such as pictures cannot be transferred as a result of re-creating the app.(Game Engine changed: cocos2d->Unity3d)
v1.4 [May 22, 2017] 
- BugFix: Crash abnormal termination at startup.
- Change: Application Name(FREE -> Lite)