- Stick: Add new properties `energy_consumption_today` counter and `energy_consumption_today_last_reset` timestamp. These properties can be used to properly measure the used energy. Very useful for the 'Energy' capabilities introduced in Home Assistant 2021.8
- Stick: Synchronize clock of all plugwise devices once a day
- Stick: Reduced local clock drift from 30 to 5 seconds
- Stick: Optimized retrieval and handling of energy history
- Smile: add the required sensor attributes for Energy support
- Smile: add last_reset timestamps for interval-sensors and cumulative sensors
- Smile: fix the unit_of_measurement of electrical-cumulative-sensors (Wh --> kWh)