v5.0.0

Added:

• Support for custom notification sounds on all backends.
• Allow specifying sounds and icons either by name (for existing system sounds) or as a referenced by a URI or path.
• Allow specifying attachments either by URI or path.
• Add a get_capabilities() API that returns which features are supported by a platform.
• Compatibility with Ubuntu 20.04 and other older Dbus notification servers which do not conform to the current desktop notification API spec.
• A dedicated class DesktopNotifierSync with a blocking API instead of the async API of DesktopNotifier.

Changed:

• Removed code signing requirement for macOS binaries. Instead of preventing notification requests, only log a warning that notifications may fail. It is not documented which code signature checks an app must pass to send notifications and this allows apps that fail some of the checks and still send notifications.

Fixed:

• Fixed a segfault on macOS when passing an attachment path that does not refer to an actual file.

Deprecated:

• Deprecated specifying icons as strings. Use the base.Icon class instead.
• Deprecated specifying attachments as URI strings. Use the base.Attachement class instead.
• Deprecated specifying notification sounds as boolean (True = default sound, False = no sound). Use base.DEFAULT_SOUND for the system default and None for no sound instead. Use the base.Sound class for custom sounds.

Removed:

• Removed the synchronous DesktopNotifier.send_sync() API. Use DesktopNotifierSync instead.