* Added the index name to its deconstruction. * Added indexes to sqlite3.schema._remake_table() so that indexes aren't dropped when _remake_table() is called. Thanks timgraham & MarkusH for review and advice.
This removes the dependency of the Index class on its 'model' attribute.
Added the AddIndex and RemoveIndex operations to use them in migrations. Thanks markush, mjtamlyn, timgraham, and charettes for review and advice.