Update sample code and remove whitespace.
Merge pull request #816 from azavea/topic/readme-sample-code

Update sample code and remove whitespace.
Close lines of a polygon when reading GeoJSON.

This comes from a leaflet draw plugin translating to GeoJSON with polygons who's borders are not closed.
Merge pull request #817 from lossyrob/geojson-fix

Close lines of a polygon when reading GeoJSON.
Merge remote-tracking branch 'upstream/master' into extent-refactor
Merge remote-tracking branch 'upstream/master' into extent-refactor
Changed all format calls without specifying the number of trailing decimals to string interpolation. Changed all format with specidying the number of trailing decimals to formatLocal with english locale.
Changed all format calls without specifying the number of trailing decimals to string interpolation. Changed all format with specidying the number of trailing decimals to formatLocal with english locale.
Merge branch 'feature/format-localization-fix' of github.com:johanstenberg92/geotrellis into feature/format-localization-fix
Merge branch 'feature/format-localization-fix' of github.com:johanstenberg92/geotrellis into feature/format-localization-fix
Merge branch 'feature/format-localization-fix' of github.com:johanstenberg92/geotrellis into feature/format-localization-fix
Merge branch 'feature/format-localization-fix' of github.com:johanstenberg92/geotrellis into feature/format-localization-fix
Merge branch 'feature/format-localization-fix' of github.com:johanstenberg92/geotrellis into feature/format-localization-fix
Merge pull request #818 from johanstenberg92/feature/format-localization-fix

Fixed format localization to always English (for dots instead of commas).
Fixed ConstantTile combine.
Merged in upstream
Merged in Eugene's focal changes.