Create docs folder

Add manual editing procedure and updated cdot data

Add os license

Ignore extra geojson properties added by QGIS

Documentation

Remove unused local variables min/max

Add missing call to System.exit() with exit code. Remove unused imports from all classes.

Unit test for gpkg2ppm command line tool. Update documentation

Update dependencies

Tests for ppm2geojson command line

Include test data

PpmLine test

Geojson tests

Branch for additional unit tests

Exclude geospatial file types except in data directory. Remove language about downloading zips from readme.