Bump to v0.8.3 with Py3 string encoding quickfix - skipping 0.8.2

LAST CHECK-IN BEFORE 0.8.0

tagging 0.7.0 release

Update VERSION to 0.6.0 for upcoming release

set VERSION to v0.5.0 - LAST CHECK-IN FOR v0.5.0

tagging 0.4.0 release

tagging 0.3.0 release

tagging GeoHealthCheck release 0.2.0

Merge pull request geopython#99 from geopython/dev

set VERSION to 0.1.0 for release 0.1.0