Initial work on new feature
Merge branch 'develop' of github.com:pronamic/wp-orbis-subscriptions into feature-subscription-reminder
Addition of extend method.  Accepts DateInterval as an optional parameter, else defaults to 1 year.  Will add that interval period to the expiration date, and update the orbis_subscriptions entry.
Update to comments. Addition of send_reminder method.
Addition of settings class
Now takes parameters for settings like subject, body and url. No longer hard references the class
Addition of settings page view
Rough addition of new classes
Support for method chaning
Formatting and checks a custom entry in the orbis_subscriptions exist
now uses new Orbis_Subscription class
Addition of generate_license_key method and save method
Comments for function orbis_subscription_get_data( $post_id ) and parameter name change to make more sense
Removed old class
Removed Where type references. Will inquire about its reasoning later.
Fixed license key generation
Update to use new methods from associated data.  Will be better in seperate class, but is outside the scope
Update to factory. Still requires more finalizing
Class to handle the new page to show expiring licenses.
Update to function that retrieves orbis_subscription data to also join with associated tables