worked on spells
Merge remote-tracking branch 'origin/master'
light testing
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/august/screens/ScreenIngame.java
fixed bug, where 2 enemies spawn at the same place
add spell collision check
add enemy die
add fire ball collision animation
add mana absorption by casting a spell
add mana regeneration (without dynamic value)