Extra text in tool version

[bernt-matthias]

Seems that the tool version command outputs some extra text:

Matplotlib created a temporary config/cache directory at /tmp/matplotlib-kaxxsc2g because the default path (/home/qiime2/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
diversity version 2022.11.1

I guess MPLCONFIGDIR should be set for the version command (and maybe even for command).

Alternatively one could use some redirection / grep / tail to get only the actual version.

[ebolyen]

I think we need to silence all stdout in our driver until it's time to print the version. It's annoying, but should prevent this and other warnings from slipping in.

[ebolyen]

I'll work on getting this fixed in the next release!