Notification API Version 1.4.0

This release adds three new methods: createSubscriptionFilter, getSubscriptionFilter, and deleteSubscriptionFilter.

createSubscriptionFilter: This method allows applications to create a filter for a subscription. Filters allow applications to only send notifications when they match a provided criteria.

getSubscriptionFilter: This method allows applications to retrieve the filter details for the specified subscription filter.

deleteSubscriptionFilter: This method allows applications to disable an active filter on a subscription.

A new field, filterable, has been added to in the getTopic response to indicate if the topic is filterable or not.

A new field, filterId, has been added to the getSubscription response that holds the id of the filter applied to the subscription.