Added my bio to the core team.
Refactored model lookup tests; refs #18586.
Fixed #23522 -- Changed reverse() to return a Unicode string; not bytes
Fixed #23611 -- update_or_create failing from a related manager

Added update_or_create to RelatedManager, ManyRelatedManager and
GenericRelatedObjectManager.
Added missing get_or_create to GenericRelatedObjectManager.
Add myself to AUTHORS and register authorship of ed37f7e

This commit is a record that ed37f7e was my contribution.
Thanks Loic Bistuer for reviewing it.
Fixed misplaced test case.
Fixed #23609 -- Changed behavior when dropping a NULL constraint to update rows with NULL to default
Referred #23609 -- Added migration questioner support for NOT NULL alterations