Updated character hitboxes to make them easier to select

Added health regeneration to characters

Fixed a bug where characters couldn't use mana pool and wood pile at the same time

Fixed character pathing issue

Added wood resource indicator to minions

Added feedback messages when denied an action

Added an optional tutorial at beginning of the game.

Minions can now melee attack when not enhanced by spellbook

Witch/minions will now shoot a zombie repeatedly until it is dead after one click