📰 Custom Issue

Two link checks seem to be consistently failing across PRs.

• http://matthew-brett.github.com/pydagogue/gh_delete_master.html
  Looks like there is a straight substitution for this: https://matthew-brett.github.io/pydagogue/gh_delete_master.html
• https://readthedocs.org/dashboard/scitools-iris/version/v3.0.0rc0/
  No idea what to do about this one 🙁