Changes
- Use asynctest for asyncio tests @Adminiuga (#311)
- Make _attridx a public attribute @Adminiuga (#313)
- Run black and isort in linting @Adminiuga (#306)
- Use Accept instead of Content-Type in firmware provider GET requests @puddly (#305)
🐛 Bug Fixes
- Catch exceptions when scheduling tasks in handlers. @Adminiuga (#312)
- Fix zigpy.zcl.clusters circular imports @Adminiuga (#304)