- by default map should be created with geographical extent and zoom
- allow to change map imageimage  size
- documentation update
- map class moved to geotiler.map module
- tile request code moved to geotiler.tilenet module
- list of builtin providers moved to geotiler.conf module
- removed unused Map.draw_bbox method
- moved map related doctests into map unit tests suite
- git ignore file update
- changed http user agent string to geotiler/ver
- s/netloc/host/
- set version in geotiler package directly
- removed changelog, makefile and version files - not needed anymore
- setup.py file cleanup
- removed TileRequest.loaded method - not used anymore, use `done`
  attribute instead
- removed fatbits option
- Map.render_tiles method moved to geotiler.tilenet module as a function
- removed thread executor code from render_tiles function into separate
  class to allow different tiles downloading strategies