unigeds.db

This empty database is the official UNIGEDS schema. It is copied when the user makes a new tree, and the copy is given a name suggested by the user with Treebard's `.tbd` extension. The copy of unigeds.db will have a few tables added to it to store data that's specific to the user, the app, or the vendor. The unigeds.db table schemas are meant to be unchanged by the dev-user so that unigeds.db can serve to replace GEDCOM as the tree-sharing standard for forward-looking genieware vendors.