Stubbed out VecTiles.topojson.MultiProvider
Added bounds to VecTiles EmptyResponse constructor
General cleanup in VecTiles TopoJSON code
Performing first pass TopoJSON concatenation for non-Multi geometries
Performing TopoJSON concatenation for all geometries
Reorganized and cleaned up VecTiles MultiProvider
Responing with actual, valid TopoJSON
Moved topojson.MultiProvider to VecTiles.MultiProvider
Added support for VecTiles MultiProvider GeoJSON
Added tests for VecTile MultiResponse
Greatly simplified multi-GeoJSON VecTiles response; previous version wasn't on-spec
Made GeoJSON output precision adaptive to different zoom levels
Added "clipped" property to VecTiles GeoJSON features TopoJSON geometries, when turned on
Increased precision of TopoJSON integers in VecTiles topojson.get_transform()