Basin3d

Bug fix to set and handle environment variables properly

+ Issue 205 - Correct documentation and EPA plugin for numeric envionment variable

Refactor core/catalog to use SQLite + SQLAlchemy, enhance EPA Plugin

+ Issue 191 - EPA plugin: Add support for WQP v3.0 web services
+ Issue 192 - EPA plugin: Add failover for GeoServer WFS service
+ Issue 193 - Refactor Metadata Catalog to Use SQLite and SQLAlchemy
+ Issue 197, Issue 199 - Updates to Github Actions

Bug fix to correct EPA plugin for empty results.

+ Issue 189 - EPA plugin: empty results hangs on locations endpoint

Bug fix to correct EPA plugin for use in djanso-basin3d.

+ Issue 178 - EPA plugin causing incorrect MeasTVPObs return in django-basin3d

Minor update that correctly handles stream discharge (RDC) for the USGS data that are missing values. Note: it is not a full solution for supporting a common BASIN-3D missing value vocabulary.

+ Issue 158 - Support missing values

This release that adds documentation improvements and corrects unit issues in the BASIN-3D observed property vocabulary.
This is a major release; however there are no breaking changes.

+ Issue 145 - update Acknowledgements
+ Issue 176 - units in basin3d observed property vocabulary are amiss
+ Issue 183 - Documentation updates