2.9.5 Release

• This update fixes a longstanding issue with buttons, where the SDK would always show the buttons of the most recently received notification.
• For example, if a notification is received with a "Like" button, and then another notification is received with an "Unlike" button, both notifications will now display the "Unlike" button since it was the more recently received.
• This update adds a cache of registered UNNotificationCategory identifiers, allowing the SDK to assign unique categories for each push notification, letting each notification have their own unique buttons.