v 0.1.6 Fixes and add up's

Hi everyone !

V 0.1.6 is here with the following fixes :

• added Tooltips for ui icons
• improved visual and performance
• corrected protective igloo 
• corrected crazy horse now takes the path with the more pawns to kill.
• corrected king can eat a protected piece
• corrected spells not following piece move
• added quit game menu (escape key) for abandoning or just quit game.

Have fun !