bumping to version 0.1.5 (redis#57)

Adding Release notes and readme to package (redis#38)

* adding readme/release notes to package

Date time hash bug - id generation (redis#30)

* addressing DateTime serialization issue, making sure ids can be generated correctly

fixing issue with index null checking, and equality check for numerics (

redis#23)

* fixing issue with index null checking, and equality check for numerics

Improving parsing for GeoLocs (redis#19)

* Improving parsing for GeoLocs