Add render function to game
Fix score calculation

I don't know where I got my old equation, but it was growing way too
fast.
List exports each on their own line
Revert "Return Integers from score and quality"

This reverts commit 591c5bab40ebea63cf4c4f3f09fb196173e74995.

Conflicts:
	library/Threase/Game.hs
	test-suite/Threase/BoardSpec.hs
	test-suite/Threase/TileSpec.hs
Add shiftWith function to vector
Add shiftWith function to board
Include moves in game render
Update readme with example