Solcast fixes, minor tweak to soc_keep and discharge

What's Changed

Tweak to handling of soc_keep and discharge

• Tweak to handling of soc_keep and discharge by @springfall2008 in #1184

Minor bug fixes

• Better handle re-connnect by @springfall2008 in #1183
• Make solcast data reporting more robust by @springfall2008 in #1187
• Catch solcast empty data crash by @springfall2008 in #1182
• Bump version to .3 by @springfall2008 in #1186

Full Changelog: v7.22.2...v7.23.3