Fix tilestats; enable large merges

Merge pull request #45 from mapbox/widemerge

Do a pyramid merge if there are too many counts to merge at once

Pick up tilestats fixes and other changes from Tippecanoe

Merge pull request #43 from mapbox/tippecanoe-fixes

Pick up tilestats fixes and other changes from Tippecanoe

Include tilestats in vector tileset metadata

Merge pull request #42 from mapbox/tilestats

Include tilestats in metadata

Fix polygon encoding error: close them with closepath, not lineto

Merge pull request #38 from mapbox/close-polygons

Close polygons with closepath instead of lineto

Add back the option to produce points instead of polygons

Merge pull request #37 from mapbox/points

Add back the option to produce points instead of polygons

Add option to raise threshold as needed to reduce tile size

Merge pull request #35 from mapbox/dynamic-threshold

Add option to dynamically raise threshold to make tiles small enough

Fix memory leak in tile-count-tile

Merge pull request #31 from mapbox/tile-stdio

Use stdio instead of mapped memory to read the count file when tiling

Improve documentation; fix tile-count-merge -p

v0.4.0

Make the -p option on tile-count-merge work

Add option for minimum absolute count threshold

v0.3.2

Add option for minimum absolute count threshold, and related tests

Tile size limit flag

• Add a flag to disregard the usual 500K tile size limit