Move issues from get-pelican/pelican-plugins

[moorepants]

It would be nice to migrate the specific issues related to render-math from the old repository to this repository.

[kdeldycke]

I identified these open issues:

• https://github.com/getpelican/pelican-plugins/issues/1072
• https://github.com/getpelican/pelican-plugins/pull/921
• https://github.com/getpelican/pelican-plugins/issues/868
• https://github.com/getpelican/pelican-plugins/issues/829
• https://github.com/getpelican/pelican-plugins/issues/625

[justinmayer]

Sadly, I don't think they can be moved, since they are in different organizations. I think they would have to be re-created.