* Added Bluetooth Low Energy device tracker
* Added new file(s)
* Fixed pylint errors
* Remove traling zeros from device names
* recreated deleted file
* Added requirements
* Renamed to bluetooth_le tracker
Removed gattlib from tests
Minor code cleanup
* - fixed .coveragerc bug
- changed discovery algorithm, new devices will only be added if seen 5 times to make sure
HA doesn't blow the database with devices just passing by