* load overviews instead of full detail to avoid memory bomb
* fix overview level indexing & use None when no overview for clarity
* tweak nodata value for RGBA
* rio-pmtiles: show progress by default
* change --progress-bar to --silent [#338]
* rio-pmtiles: change defaults from JPEG/256/nearest to WEBP/512/bilinear [#338]
* rename title to name [#338]
* rio-pmtiles: automatic guessing of maxzoom [#338]
* determine maxzoom based on image dimensions and tile_size.
* rio-pmtiles: 1.0.0
Add rio-pmtiles command line tool. [#338]
This is derived from the original mapbox/rio-mbtiles implementation, with changes:
* output PMTiles only instead of MBTiles.
* Python 3.7+ only.
* remove --implementation, --image-dump, --append/--overwrite, --covers features.
* bump dependency versions.
* better progress reporting; add pyroaring.
* update README and license texts.
* rio-pmtiles v0.0.6 on PyPI
