Includes casr, dbel, and dbcar. Does not include ascar as we don't
have Access Security rules in PythonSoftIOC.

Also add WaveformIn to default exports from softioc.builder and clarify in
code that Waveform is a legacy name.

On MacOS we are seeing GitHub Actions take 15+ seconds to start a new
Process.

Also added some more logging for additional diagnosis

This used to be an easy way to return a copy of the array. Now we must
use the explicit copy function.

Note the tests fail, largely due to now numpy defaults to
a floating point dtype, which we cannot coerce into an array of strings.

Also TODOs need completion...

Note that these tests don't currently pass!

Also make all the tests pass. Involved skipping

Also add more tests

- Rewrites the note on waveform of strings
- Refactors _require_waveform
- Removes unused DTYPE and add more tests for mixed lists