- Moved database-authentication-specific checkPassword method out of user row object and into auth object
- Eliminated direct access to cat_password property of user row object by using getters/setters

Now that theme logic has its own module, changed the namespace of the view helpers to something more logical.

Changed theme configuration to use PHP files instead of .ini files in order to allow more flexible helper configuration.

Eliminated unnecessary ServiceLocator/ConfigReader in VuFind\Cart; dependencies and configuration are now injected through constructor.

Removed arbitrary VuFind\Cart reference in MultiAuthTest to prevent confusion; added test involving bad service name.

Created wrapper method to allow more consistent capability testing of ILS drivers -- a prerequisite for implementing the multi-backend driver (thanks to Kyle McGrogan).

Resolving VUFIND-459 -- adding utility to merge harvested MARC XML records (adapted from the work of Thomas Schwaerzler).

Switched \VuFind\Connection\OpenLibrary to accept injected HTTP client; adjusted OpenLibrarySubjects recommendation module to perform injection.