Switch from GeoJson to OSM PBF. Mod filter().

index.js, package.json
  -Switch over from ingesting GeoJson files to OSM PBFs.
  -Replace `JSONStream` with `osm-pbf-parser`.

(address-normalizer, test/address-normalizer).js
  -Rewrite `filter()` to correctly filter PBF records, which have
  a generally different format than whatever was contained in
  the converted GeoJSON.