* Make SECRET_COLLECTION_DEFAULT and SECRET_COLLECTION_SESSION
be the simple aliases for those collections.
* Accept either an alias or a path in secret_password_store()
and secret_service_store() and friends.
* Schemas can also be created dynamically
* Correct introspection types for hash tables passed as args
* Validate argument hash tables
* Add some predefined schemas
* Allow allocation of pageable passwords from lookup functions