Xiaomi-mi-scale

Changed
- Fixed MQTT Discovery Message

Changed
- Updated workflow to automatically build docker images on new releases with version and latest tags

Changed
- Remove additional logging for Scale V1 that was used for testing
- Changed timestamp to default python format (fixes https://github.com/lolouk44/xiaomi_mi_scale/issues/29)
- Removed hard-coded 'unit_f_measurement' in the MQTT Discovery (fixes https://github.com/lolouk44/hassio-addons/issues/22)
- Fixed hard coded MQTT Discovery Prefix (fixes https://github.com/lolouk44/xiaomi_mi_scale/issues/35)
- Change measures format to be numbers instead of string where applicable (https://github.com/lolouk44/xiaomi_mi_scale/pull/36)
Added
- Created workflow to automatically build docker images on new releases (Thanks [AiiR42](https://github.com/AiiR42) for your help)

Changed
- Fixed issue with detection of boolean in MQTT_DISCOVERY (https://github.com/lolouk44/hassio-addons/issues/16 and https://github.com/lolouk44/xiaomi_mi_scale/issues/31)

Changed
- Fixed typo in MQTT message following the **breaking change** to snake_case attributes in 0.1.8

Breaking Changes
- Attributes are now snake_case (fixes https://github.com/lolouk44/xiaomi_mi_scale/issues/24)
Changed
- Fixed default MQTT Prefix in config.json typo (fixes https://github.com/lolouk44/hassio-addons/issues/6)
- Fixed MQTT Discovery value check to discover
- Changed timestamp to default python format
- Changes the bluetooth reset from reset to down-wait-up (fixes https://github.com/lolouk44/hassio-addons/issues/13)
- Fixed hard coded hci0 to provided hci interface when performing a reset
- Fixed weight in Lbs not detected on Scale V1 (XMTZCO1HM) (fixes https://github.com/lolouk44/xiaomi_mi_scale/issues/28)
- Fixed body calculations for non kg weights
- Updated README
Added
- Added unit to attributes