Multi-enemy combat, tons of bugfixes, initial skill support

This update includes the ability to fight 1-3 enemies at a time. I kind of rushed this so people could see how much I'd changed since I made this for school.

I didn't update all of the quests to be more difficult yet, only the first two. So the goblins and orc quests are easier (if you can hit level 2 beforehand) than intended. But balance isn't what I'm shooting for right now, just getting things working.

I made the initial support for active abilities. Right now power attack is the only working active, since I need to add effects into the game. I've mostly worked on the engine, reworking how combat flows, handling initiative and turn order, creating buttons based on what feats you select. 

Up next is adding effects so more feats work, such as stunning enemies and tactical abilities that lower enemy attack bonus or AC ect. Might add some initial support for having a party. Mostly hirelings such as town guards, ally AI is going to be a big undertaking for what I want to do with it. But tactical abilities also have little point without allies to take advantage of them.

You can always head over to the discord and check suggest what you'd like to see next ;^)