repeated_test no longer compatible with 3.10

repeated_test relies on unittest2, which is longer compatible with python 3.10.

Both packages haven't been maintained in 5 years.

They should be dropped.

related: https://github.com/epsy/sigtools/issues/26

As in epsy/sigtools#26 few other incompatibilities affect supporting 3.10 across clize/sigtools just yet. I'll make sure repeated_test is also updated in the process.

Thanks for bringing it up!

Fixed with repeated_test 2.3.1, clize 5.0.0