fix system_dc_pv_power to really be in kWh

Add support for infinite connect retry

Implement inverter temperture as requested: tomer-w/ha-victron-mqtt#171

Fix issue with errors related to duplicate formulas

Added ScheduledSoc. tomer-w/ha-victron-mqtt#169

Fix minor test issue

Add dependecy between metrics. If it is not found than the metric wil…

…l not be added. This is good fo generator settings which should not show up if there is no generator.

Filter devices with no metrics.

Add ActiveSocLimit: tomer-w/ha-victron-mqtt#165

Fix formula to return data in kWh and not Wh.

Fix issues with not honoring the defined precision in some cases.

Fix issue with calling new metric multiple times if we received multi…

…ple messages for the same topic before first full publish. Fix: tomer-w/ha-victron-mqtt#153 and tomer-w/ha-victron-mqtt#152