Added HP property to Mobs.  Moved Player into it's own class (still extends Mob).
Have a really really really messy attack for mobs and player.  (it's uggo)
Created Combat Manager to handle all combat related things.  Right now melee attacks are only possible by duplicating the collision boxes of player and mob.
Projectiles are in.  Bullet image is green square.  Collisions handled for everything projectile related.
Bonus:  Mobs shoot but only execution style point blank.
Fixed projectiles to spawn from cardinal directions of mob sprite.
Added CanAttack bool to Mob so that by default, mobs will just walk at player instead of trying to perform attack at point blank.
Fixed collision boxes on projectiles being off by half a width/height
Made skeleton a skeleton.  Added passage blocks to list that can be collided with projectiles.
Merge branch 'feature/combat' into develop