regex-{base,compat,pcre,posix}

[hvr]

https://mail.haskell.org/pipermail/libraries/2019-September/029927.html

[andreasabel]

While you are at it, please move source and issue tracking for these packages to github.

[hvr]

The takeover has been completed; you can track progress at the respective github repos:

• https://github.com/hvr/regex-base
• https://github.com/hvr/regex-compat
• https://github.com/hvr/regex-pcre
• https://github.com/hvr/regex-posix