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- new improved seed tool
- seed polygon areas instead BBOX (from shapefiles, etc)
- advanced seeding strategy
- multiprocessing
- new link_single_color_images layer option. multiple "empty" tiles will
be linked to the same image. (Unix only)
- fixed transparency for image parts without tiles
- log HTTP requests to servers regardless of the success
- made proj4 data dir configurable
- use same ordering of layers in service.yaml for capabilities documents
(use list of dicts in configuration, see docs)
- performance improvements for requests with multiple layers and
for layers with smaler BBOXs