hl-line+.el solves certain performance problems of
It is created in 2006, and last updated in 2018.
Despite that, it was never packaged to be available at e.g. melpa, which would be a bit more convenient than copy-pasting updates from wiki into a local setup.
Is there any reason, e.g. license terms, that prevents someone from creating and maintaining such a package? For instance, I can neither understand the license under which the specific file is made available, nor can I understand under which license files at https://github.com/emacsmirror/emacswiki.org/ are published.
While at it: is there a much better alternative to
hl-line+ that makes it obsolete and not worth maintaining?