Upcoming v0.1.15 update

++++ Next update will  include ++++
- A mini-boss

++++ And may include these or may not ++++
Status effect
- Covered in ***, make player slower, get it from one of the mini boss attack, will add other source later

Other stuff
- Add some animation canceling between attack and cast, add casting cooldown
- Add additional spell and skill each so I can get the feel when having multiple stuff  in the shortcut
- Game over screen when hp reach 0, instead of nothing.