moving the filter for deleted terms into the main class because term deletions can happen outside the is_admin context.
wip
new_geo_by_woeid(), get_geo_by_woeid(), and get_geo_by_ttid()

Added new methods:

bgeo()->new_geo_by_woeid()
bgeo()->get_geo_by_woeid()
bgeo()->get_geo_by_ttid()

And test for them
working tests for the basics

bgeo()->update_geo(), bgeo()->get_geo(), bgeo()->delete_geo(), wp_insert_term(), wp_delete_term()