Merge pull request adafruit#33 from dhalbert/is_connected-not-async

as of bleak 0.11.0, is_connected is no longer async

Merge pull request adafruit#32 from kschmelzer/master

Update characteristic.py

Merge pull request adafruit#31 from alexwhittemore/master

Add readme note about disabling hcitool backend

Merge pull request adafruit#30 from dhalbert/response-fix

fix check of RESPONSE bit

Merge pull request adafruit#23 from dhalbert/readline-fix

Readline fix; bleak update

Merge pull request adafruit#22 from dhalbert/cleanup-on-exit

disconnect connections on ctrl-c

Require at least bleak 0.8.0

Merge pull request adafruit#21 from dhalbert/macos-fixes

Fix MacOS issues, and make compatible with bleak 0.8.0

Merge pull request adafruit#17 from dhalbert/set_adapter

add set_adapter(); fix new pylint complaints

Merge pull request adafruit#13 from dhalbert/adv-name

Add device name to advertisement data that is passed back.