To work around ronn's [issue with nested
lists](https://github.com/rtomayko/ronn/issues/35), treat each item as
a separate paragraph with alternate list markers.

These were imported from homebrew/games.

Check homepages and don’t check mirrors unless `—strict`.

Current version aliases should be provided for versioned formulae so
people can `brew install foo@1.2` to provide pin-like behaviour.

Regression introduced in #1754 which meant that (due to storing the
current formula revision in `attributes_map`) `stable_revisions.empty?`
would never be `true`.

Current version aliases should be provided for versioned formulae so
people can `brew install foo@1.2` to provide pin-like behaviour.

Reduce the chance of false flagging by making sure that the existing pr
surfaced by GitHub.issues_for_formula actually contains the exact formula name
in its title.

Discussed in
https://github.com/Homebrew/brew/pull/1987/files#r100693581.

This was originally ommitted because it wasn't compatible with Ruby 1.8.
(See https://github.com/Homebrew/legacy-homebrew/pull/48144#r49928971).

Ref: https://sourceforge.net/blog/introducing-https-for-project-websites/

If the formula's tap isn't tapped yet when running `brew pull`, a false
positive occurs for the nonstandard bump subject check, and a bogus
warning is printed, which claims the bump subject should refer to the
old version not the new version.

This pull request fixes the documentation for the —only flag of the
tests cmd.