Basic AI exist now, and they are rude.

The screen clamping needs some work, and probably should be prioritized. It's extremely easy to get bumped off screen and then you can't even get back into view (which is weird).

There are several new layers and tags being used, as well as some class rearranging, so some stuff might not be immediately obvious.
Merge pull request #4 from Covalent-Games/implement/basic-ai

lgtm