v2.0.0

Added

• Added bleak.backends.get_default_backend() and BleakBackend enum for a centralized backend detection.
• Added BleakClient().backend_id and BleakScanner().backend_id properties to identify the backend in use.

Changed

• Use "AcquireNotify" rather than "StartNotify" for Linux backend on supported characteristics
• Allow multiple calls to disconnect() on Windows to align behavior over all backends.
• Raise new BleakBluetoothNotAvailableError when Bluetooth is not supported, turned off or permission is denied.

Fixed

• Fixed potential race condition causing timeout while connecting in WinRT backend.
• Fixed file handle leak in BlueZ backend when D-Bus connection is lost and re-established.
• Fixed crash in CoreBluetooth backend if an ObjC delegate callback is called after the asyncio run loop stops.
• Fixed possible deadlock when starting scanning on Windows when Bluetooth is turned off.
• Fixed "Bluetooth device is turned off" Exception on macOS, when a Bluetooth permission request popup is shown to the user by the OS.

Removed

• Removed support for Python 3.9.
• Removed support for macOS < 10.15.