Beacontools

Added support for extended BLE commands for devices using HCI >= 5.0 (Linux only, thanks to [idaniel86](https://github.com/idaniel86))

Improved prefiltering of packets, fixes 48

- Removed (unused) rfu field from the Eddystone UID packet, fixes 39

- Dropped support for Python 2.7 and 3.4
- Added support for COVID-19 Exposure Notifications
- Added support for FreeBSD and fixed temperature parsing (thanks to myfreeweb)
- Added support for Control-J Monitor beacons (thanks to clydebarrow)
- Added support for Estimote Nearables (thanks to ShaunPlummer)

* Multiple fixes and internal refactorings, including support for Raspberry Pi 3B+ (huge thanks to [cereal](https://github.com/cereal))
* Updated dependencies

* Added support for Estimote Telemetry packets (see examples/parser_example.py)
* Relaxed parsing constraints for RFU and flags field
* Added temperature output in 8.8 fixed point decimal format for Eddystone TLM