GitHub does a redirect to https:// when you use http://
repology complains with:
“Homepage link "https://github.com/…" is dead (HTTP error 404) for more than a month.”
This will fix some of them (not all though)
Currently pencil won't start, due to incompatible firefox version:
$ pencil
Error: Platform version '47.0.1' is not compatible with
minVersion >= 36.0
See https://github.com/prikhi/pencil/issues/840.
