[Feature Request] Option for scheduled table updates #181
Description
I have some tables, that display time differences to the current time in columns that are calculated in modify sections. As there's no actual state change of one of the source entities in the table, the table only updates, if the dashboard is reloaded.
As a workaround, I currently add a "timestamp" source entity which regularly changes it's state, but to avoid it being displayed together with the actual values I have to disable sorting and apply some css magic to hide it again. And there's the timestamp entity itself, eating up unnecessary cpu time 24/7 just for udating a table watched a couple of seconds a day.
Long story short: It would be nice to have some scan_interval / update_interval flex-table option to trigger scheduled updates of the table.