2026.5.1 Added sensors without tax and backup power control

What's Changed

• Add new sensor entities for Zonneplan PV & Battery by @Arnoudd in #278
• Add sensors without tax Fixes #272 in #283
• Improve logging in #284
• Fix spelling of 'forecast' in tariff keys by @ronaldtveen in #258
• Add migration of forcast_ to forecast_ in unique_id in #285
• Add backup power control #266 in #286
• Update model and device info for charger and PV in entity.py by @Arnoudd in #287
• Change sum sensors to TOTAL with set reset key in #289

New Contributors

• @ronaldtveen made their first contribution in #258

Full Changelog: 2026.5.0...2026.5.1

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