What's Changed
* Apply black formatting. by delucchi-cmu in https://github.com/astronomy-commons/hipscat/pull/192
* Consolidating some pixel list logic by delucchi-cmu in https://github.com/astronomy-commons/hipscat/pull/193
* Add basic index functionality by delucchi-cmu in https://github.com/astronomy-commons/hipscat/pull/191
* Validate coordinates for catalog searches by camposandro in https://github.com/astronomy-commons/hipscat/pull/194
* Check for polygon degeneracy by camposandro in https://github.com/astronomy-commons/hipscat/pull/195
**Full Changelog**: https://github.com/astronomy-commons/hipscat/compare/v0.2.1...v0.2.2