Initial test of actor branch.
Just a check-in since I'm doing a lot. Modified collision detection and
added actor.
Another checkin. Built the components.
One last checkin. Refactored the character factory to remove excess
creation. The components now set the properties of the entities.
Updated Entity with calls to actors. Closes #77
Got everything except the collision detection rolling again.
Fixes #78 but there is now an issue with jump that I'll have to track
down.
Fixes #79