Beam weapons can now pierce through x amount of targets. Work for #8
Merge remote-tracking branch 'origin/Beam_Weapons' into boss_guns
Merge branch 'boss_movement' into boss_guns

Conflicts:
	Assets/Scripts/Weapons/Weapon.cs
Laser Spin
work on #61
- Added a Spider Tank State that has the tank spin and shoot a laser all over.
Bug Fixes
- Fixes bug that was causing the player to be pushed through the ground when the boss hits them.
- Fixes the error messages that would occasionally happen when switching weapons.
Merge branch 'boss_guns' into boss_movement