Extracted sprite render method in test
Only render sprites if they are enabled
Merge branch 'master' of https://github.com/ChrisJansson/GBEmu
Don't underflow frame buffer to the left when drawing sprites
Prevent sprites from overflowing to the next line
Test that frame buffer is not overflowed
Flip sprite drawing in x
Added a not implemented ex for 8x16 sprites
Flip sprites y-wise
Flip sprites in y
Sprite color 0 is transparent
Cleanup