These all introduce or update existing Python Packaging Specifications,
and should follow the PyPA Specification processes. These are expected
to be Standards Track PEPs and are not informational.
This change also ensures that they get listed under the correct section
on the Packaging topic index.
* Check created date exists & matches format, and fix non-conforming
* Automatically fix mixed EoLs on checkin and in one PEP
* Add rst-directive-colons check, fix issue it found and refine regex