Added enemy stuns, misc fixes.

List of changes:
-Blue/Close range weapon should now Stun enemies
-Stunned Enemies should now stop pursuit for ~1sec.
-Stunned Enemies flash while stunned
-Player sprite is now hidden during room transitions, easy/elegant fix a
la NES/SNES
Merge remote-tracking branch 'origin/master'

Conflicts:
	GameJamProject/Assets/Scene1.unity
Added second enemy type prefab

New enemy type "Strong Enemy", is immune to stun, wider aggro radius,
faster movement