[v0.13] Merge development into master
Added notes field to JobItem (#571)
Added webpage_url field to WorkbookItem (#661)
Added support for switching between sites (#655)
Added support for querying favorites for a user (#656)
Added support for Python 3.8 (#659)
Added support for Data Alerts (#667)
Added support for basic Extract operations - Create, Delete, en/re/decrypt for site (#672)
Added support for creating and querying Active Directory groups (#674)
Added support for asynchronously updating a group (#674)
Improved handling of invalid dates (#529)
Improved consistency of update_permission endpoints (#668)
Documentation updates (#658, #669, #670, #673, #683)