* Use whichever latest or non-broken version of Android Studio that works at all...

* Coding is in Java 11 with desugaring as per Android needs.

* Tags used; always followed with a colon
  - URGENT: not a show-stopper, but really needs attention
  - TEST: work done and minimal testing shows it works; but full testing wasn't done (yet)

  - RELEASE: things that must be checked before doing a public release
  - NEWTHINGS: notes on how to add new functionality
  - FIXME: work around present or situation acceptable, but should be properly fixed
  - TODO: time...
  - ENHANCE: more time...
