Bellows

What's Changed
* Support firmware extensions by puddly in https://github.com/zigpy/bellows/pull/611


**Full Changelog**: https://github.com/zigpy/bellows/compare/0.42.0...0.42.1

What's Changed
* Fix some EZSP v14 commands by puddly in https://github.com/zigpy/bellows/pull/652
* Cleanly shut down the serial port on disconnect by puddly in https://github.com/zigpy/bellows/pull/633


**Full Changelog**: https://github.com/zigpy/bellows/compare/0.41.0...0.42.0

What's Changed
* Use the new zigpy packet priority attribute by puddly in https://github.com/zigpy/bellows/pull/651


**Full Changelog**: https://github.com/zigpy/bellows/compare/0.40.6...0.41.0

What's Changed
* Move EZSP send lock from `EZSP` to individual protocol handlers by puddly in https://github.com/zigpy/bellows/pull/649


**Full Changelog**: https://github.com/zigpy/bellows/compare/0.40.5...0.40.6

What's Changed
* Improve transmission reliability for sleepy end-devices by puddly in https://github.com/zigpy/bellows/pull/646


**Full Changelog**: https://github.com/zigpy/bellows/compare/0.40.4...0.40.5

What's Changed
* Drop schema conversion from the CLI by puddly in https://github.com/zigpy/bellows/pull/645
* Ensure a consistent command schema for `setSourceRoute` in EZSPv8 by puddly in https://github.com/zigpy/bellows/pull/647


**Full Changelog**: https://github.com/zigpy/bellows/compare/0.40.3...0.40.4