Persistently maintain multiple Chromecasts as digital signage without a browser.
NOTE: due to COVID-19 the maintainer does not have regular access to a regular fleet of devices used for testing. A single testing cast was procured since the last release. Things looked OK with that one device. Please send off any bugs.
NOTE: due to COVID-19 the maintainer does not have regular access to the hardware to test this application. The next release will not be for a long time based on current US conditions.