Changelog for squeather

Version 0.4.0.0, February 22, 2020

• Changed Database and Statement types so they clean up after themselves, so there is no need to (and, indeed, then cannot be) closed or finalized as they do it themselves.

• Changed OpenFlags and associated types to make API self-documenting

• Added compile-time option for threaded mode into package.yaml (though this is the default, so nothing should change from the user's persepctive)

• open function now calls sqlite3_initialize (this should not result in any user-visible changes)