The current text:
"Instead, please use our bug tracker by first filing an enhancement bug, and then attaching the file(s)."
still links to redmine, which obviously needs to be changed.
But: do we still want the separate steps of "New Issue" and "New Pull Request" with code?
Hmm. Often potential new code will not be ready to turn into a PR, in which case discussing suitability first (via the mailing list or a GitHub issue) does seem best. Can you come up with some nice wording Lenna?