Parse json file to get shapes
Group intersecting polygons
Remove unused code
Convert polygons to osm
Save inner polygons to osm
Close ways
Add potrace command
Add command line options for different tiles
Script to add margin to image
Provide more options for offsets
Remove duplicate ways and nows
Add batch script
Skip non files
Merge polygons across tiles
interior polygons now processed
Better polygon handling
Better polygon handling
Better polygon handling
Better polygon handling
Polygon simplification