2.32.0

 * test/user: don't attach User model twice (Miroslav Bajtoš)
 * app.enableAuth: correctly detect attached models (Miroslav Bajtoš)
 * Apply g.f to literal strings (Candy)
 * Make the app instance available to connectors (Subramanian Krishnan)
 * Reorder PATCH Vs PUT endpoints (Amir Jafarian)
 * streamline use if `self` (Benjamin Kroeger)
 * resolve related models from correct registry (Benjamin Kroeger)
 * KeyValueModel: add API for listing keys (Miroslav Bajtoš)
