shadow casting
Merge remote-tracking branch 'origin' into feature-visuals
added shadows and fixed lingering shadows bug
minor fix for MouseBlockControl
replaced cartoonshader for cube textures
fixed dissolving blocks fade
added a comment
cleaner shadow casting
updated installation notes
created BlockDragControl and cleaned MouseBlockControl
modified block dragging a bit more
added rope-drag behavior & visualization
added setup for additional viewports
Merge remote-tracking branch 'origin/feature-modelscreen' into GesturesGrab

Conflicts:
	src/leaptest/Main.java