Rename python modules to make singular
Use exact case for ModestMaps dependency
Add support for seeding tiles on queue
Add file queue implementation to aid testing
Add function to determine number of tiles in zoom
Refactor queue seeding command

* Support specifying multiple queue types.
* Add queue seed process test.
Resolve pyflakes warning
Support tile generation from bboxes
More consistent zoom variable naming
pep8
Sort imports
Remove no longer used shapely and rtree deps