General advances in Enemy (the parent class), adjustments in Game, Animation, and others.
New sprite for the EnemyBeam.
Minimal changes in some enemies
Merge remote-tracking branch 'origin/master' into Enemies

Conflicts:
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/Enemy.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/EnemyBeamA.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/EnemyMineShot.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/EnemyScared.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/EnemyWeak.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/EnemyWeakB.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/GRMng.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/Game.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/GameA.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/GameB.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/Level.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/LevelA.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/LevelB.cs
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/SuperGame.cs