5.6.1-beta - Rolling average in first period

Changes in 5.6.1-beta

During the first period (default 60 seconds) after a HA restart, every advertisement resulted in an state update in HA, to make sensors available as soon as possible after a restart. This caused some jumpy results in the first period. With this update, the state during this first period is now calculated as a rolling mean/rolling median. After this period, the state is updated every period in the normal way, by averaging over the last period.