Added StaticEntity class.
Changed order of keywords in Movingentity.
Removed static entity class, because it wasn't necessary.
Added House class.
Added Position constructor to House.
House can now be drawn.
World now has an AddEntity method for colliding entities.
TestWorldFactory now adds a House.
Changed speed of Adventurer.
Added DrawOrder property to entities.
House now has a draworder and world now sorts entities by draworder.
Graph now has a method to remove edges that collide with the specified entity.
Added a Tree entity.
Moved the tree around.
Moved the tree more to the center of the game.
Graph.RemoveEdgesFor now properly deletes an edge from adjecentedges from other
edges as well.