New hookshot ability: hang onto a grappable wall tile, press space to instantly go above tile, press right mouse click to drop down.
Merge branch 'master' of https://github.com/jkwendorf/ICS_169-Goliath

Conflicts:
	GoliathGame/Debug/GoliathGame.exe
	GoliathGame/Debug/GoliathGame.pdb
	GoliathGame/GoliathGame.sdf
	GoliathGame/GoliathGame.v11.suo