A RoomGenerator is now made up of two "method" classes that do separate
things:
1. A RectMethod takes the size of the area to generate and creates an
iterable stream of Rects to fill that area.
2. A RoomMethod takes a Rect and creates a room inside of it.
These two components are composable in interesting ways, and allow a
more data-driven approach to map generation, though I don't yet have the
ability to make this mechansim entirely data-driven.
Eryn Wells
dd8b0364e0