Done with station building modules
body.get_buildings_bytype() now accepts a limit argument
building.MyBuilding's pending_build and work attributes are now Working objects
Bugfix on building constructor (now dealing with negative pending build times)
bugfix resources.py - included waste (had been missing), and all amounts are now integers.  get_stored_resources in trading.py now returning resource.StoredResources object.
All body methods return objects instead of raw dicts.
Initial TBD list complete