This commit resolves all outstanding duplicate label
and duplicate citation warnings.
I have not yet addressed unreferenced footnote warnings.
I took the general strategy of replacing a target above a section heading
with references directly to that section heading,
or where impractical, disambiguting the target with ``PEP NNN``.
I also converted all the citations in PEP 482 to links,
as they were causing duplicate citation warnings.
Enforce the use of virtual environments and establish a conventional
name for the virtual environment directory.
Co-authored-by: Pradyun Gedam <pradyunsg@users.noreply.github.com>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
Co-authored-by: Zak Johnson <me@zakj.net>