* player.d: created a basic player object, can move and calculate
  FOV

* atlas.d: object to hold texture atlases. TODO: add getRect() method

* path.d:
* pathfinder.d: -

* DGame.dproj: 

* zones.xml: updated the atlas props for the new atlas class

* tile.d: added visible property

* world_service.d: added player

* zone.d: darker tile if not visible