Hap-python

Fixed
- Ensure an error response is generated on exception. [292](https://github.com/ikalchev/HAP-python/pull/292)
- Improve error reporting during pairing. [289](https://github.com/ikalchev/HAP-python/pull/289)
- Handle request for an empty read instead of throwing an exception. [288](https://github.com/ikalchev/HAP-python/pull/288)
- Fix thread safety in get characteristics. [287](https://github.com/ikalchev/HAP-python/pull/287)

Added
- Support for multiple camera streams. [273](https://github.com/ikalchev/HAP-python/pull/273)

Changed
- Use SimpleQueue instead of Queue when available (performance improvements). [274](https://github.com/ikalchev/HAP-python/pull/274)

Fixed
- Make sure accessory setup code appears when running under systemd. [276](https://github.com/ikalchev/HAP-python/pull/276)

Added
- Improve event loop handling. [270](https://github.com/ikalchev/HAP-python/pull/270)
- Auto-detect the IP address in the camera demo so it can work out of the box. [268](https://github.com/ikalchev/HAP-python/pull/268)

Fixed
- Correctly handling of a single byte read request. [267](https://github.com/ikalchev/HAP-python/pull/267)

Added
- Add compatibility with zeroconf 0.27. [263](https://github.com/ikalchev/HAP-python/pull/263)

Fixed
- Fix random disconnect after upgrade to encrypted. [253](https://github.com/ikalchev/HAP-python/pull/253)
- Convert the characteristic UUID to string only once. [256](https://github.com/ikalchev/HAP-python/pull/256)
- Fix pairing failure - split read/write encryption upgrade. [258](https://github.com/ikalchev/HAP-python/pull/258)
- Allow negotiated framerate to be used - add "-framerate" parameterto avfoundation. [260](https://github.com/ikalchev/HAP-python/pull/260)

Added
- Add support for unavailable accessories. [252](https://github.com/ikalchev/HAP-python/pull/252)

 Developers
- Cleanup and fixes for python 3.7 and 3.8. Enable pylint in Travis. [255](https://github.com/ikalchev/HAP-python/pull/255)

Fixed
- Fix race condition that causes pairing and unpairing failures. [246](https://github.com/ikalchev/HAP-python/pull/246)
- Fix loop on dropped connections that causes temporary stalls and connection loss. [249](https://github.com/ikalchev/HAP-python/pull/249)
- Fix exception on missing video fields. [245](https://github.com/ikalchev/HAP-python/pull/245)