Geo.json.bbox fixes
Completes bbox checklist items on #57 (closed)
- bbox() returns Optional.emtpy() if bbox is null and a copy of bbox otherwise.
- tests check for equality and notSame of returned bbox, and null bbox returned as Optional.empty()
- added check on bbox in FeatureCollection builder as in Feature builder
- removes GeoJsonTest main() method
Tests will be cleaned up further with the rest of the issue.