Update golang, postgres and postgis versions

Credits go to mccaffers. I just used the newest versions:
#209

Merge pull request #200 from pekarja5/fix_polygon_hierarchy

Fixed polygon hierarchy ignoring libpostal types

Merge pull request #186 from philippks/fix-wrong-node-merges

fix wrong node merges

Merge pull request #176 from philippks/update-to-python3

updated to python3

fixed typo in query

Merge pull request #143 from philippks/141-bounding-box

141 bounding box

order exported geonames by importance

order exported geonames by importance

Merge pull request #134 from philippks/release-201

Release 2.0.1

Merge pull request #127 from philippks/master

final changes for release 2.0