Dependency issue

[matthewsot]

shgao@ucdavis.edu has pointed out that a na"ive python3 -m pip install --user prdnn will fail because it depends on pysyrenn>=1.1, which has been yanked on PyPI.

This can be worked around by simply force-installing pysyrenn==1.1 first:

$ python3 -m pip install --user pysyrenn==1.1
$ python3 -m pip install --user prdnn

Ultimately, we should probably un-yank the 1.1 release from pysyrenn on PyPI. I think this is fine now as prdnn has been released, so people should be using that for patching/repair instead of the 1.0-only patching code in pysyrenn. If there are no objections to this, I will unyank it in a few days.