- Lots of improvements on Batteries, Battery-Inverters and Generic-ESS
 - User Interface Widgets for ESS Delayed Sell to Grid Controller – shifts feed-in from a photovoltaics systems with an energy storage system to reduce grid load
 - Add Zenodo Digital Object Identifier (DOI) for scientific referencing – If you use OpenEMS in your scientific research, please use our Zenodo Digital Object Identifier (DOI) as reference: https://zenodo.org/record/4480145
 
…and lots of minor additions, code quality improvements and bug fixes
