The update features small quality-of-life improvements
What's New
* A convenience method was was added for indexing objects by their UIDs (135). `make_index` will crawl whatever object is handed to it, inidexing all the scope:id tuples it finds the later dereferencing, particularly for use in `substitute_links`.
Fixes
* The version of [Pint](https://pypi.org/project/Pint/) was pinned to be compatible with Python 3.5, but with dropping 3.5 support we can advance it to take advantage of some more recent features. (#136)
* Changes were made to our GitHub configuration to help with user management. (132)