New Update interval configuration structure

Starting from version 1.18.1, the group_update_interval configuration option has been renamed to group_power_update_interval. Also force_update_frequency has been renamed to energy_update_interval.

Please update your YAML configuration to reflect this change:

Old:

powercalc:
  group_update_interval: 20
  force_update_frequency: 00:00:60

New:

powercalc:
  group_power_update_interval: 20
  energy_update_interval: 60