Release v0.3.0

• (Gaspode) Rearranged statistical data and added more values. Many thanks to Thorsten for his valuable contribution in testing the early alpha versions of this release and providing informative suggestions and recommendations for new data points.
• (Gaspode) Added Summary data
• (Gaspode) Refactored complete implementation
• (Gaspode) Changed the unit of settings for all intervals, except of realtime data, to minutes (Caution: settings are reset to defaults)
• (Gaspode) Remove disabled states at adapter startup
• (Gaspode) Removed no more supported value 'createtime' (state ID Realtime.Last_update).
• (Gaspode) Optimized rounding for selected values