MPI_TYPECLASS_LOGICAL

[jeffhammond]

Bill G says:

I do think we should look to add MPI_TYPECLASS_LOGICAL, but that is a change and will also require a changelog entry.

https://github.com/mpi-forum/mpi-standard/pull/963#pullrequestreview-2584680587

This didn't go into 5.0. It's trivial to do in 5.1 or whatever.