prevent infinite loop if there are no results; enforce the tile's bbox; make radial queries optional; omit the response header
prevent infinite loop if there are no results; enforce the tile's bbox; make radial queries optional; omit the response header

robpvn/Vector-Tile-Research,Kosta-Github/TileStache,Kosta-Github/TileStache,moskvax/TileStache,mojodna/TileStache,robpvn/Vector-Tile-Research,moskvax/TileStache,robpvn/Vector-Tile-Research,TileStache/TileStache,Blechhirn/TileStache,jbants/TileStache,mapzen/TileStache,SEL-Columbia/TileStache,jbants/TileStache,MetGIS/TileStache,Kosta-Github/TileStache,mpuig/TileStache,mapzen/TileStache,MetGIS/TileStache,Billups/TileStache,mapzen/TileStache,moskvax/TileStache,TileStache/TileStache,jbants/TileStache,Blechhirn/TileStache,mojodna/TileStache,SEL-Columbia/TileStache,Billups/TileStache,Billups/TileStache,SEL-Columbia/TileStache,mpuig/TileStache,TileStache/TileStache,MetGIS/TileStache,Blechhirn/TileStache