Correct paths reported so they are relative to the reported location of the package

fixes #1932
remove duplicate 'if cr == (0, 0):' in get_terminal_size
minor fixes to changelog
Raise NotImplementedError (not NotImplemented)

NotImplemented is a singleton intended for use in __eq__ methods where comparison is not possible for some reason.
merge
Upgrade setuptools to 5.4.2
Merge pull request #1963 from dstufft/upgrade-setuptools

Upgrade setuptools to 5.4.2
don't complain about localhost when checking security of index links

based entirely off of Guy Rozendorn's work in PR #1718
Merge pull request #1967 from r1chardj0n3s/insecure-localhost-exception

don't complain about localhost when checking security of index links
Merge pull request #1933 from r1chardj0n3s/wheel-file-list

Wheel file list
Fix pull / issue syntax
Try to order changelogs by PR number.
add missing changelog entry for PR #1967
mention issue
Merge pull request #1970 from r1chardj0n3s/insecure-localhost-exception-changelog

add missing changelog entry for PR #1967
Add changelog for --no-check-certificate #1741
Remove unnecessary duplicate reference

Fixes issue #1972
Merge pull request #1974 from r1chardj0n3s/patch-1

Remove unnecessary duplicate reference
Silence byte compile errors when installation succeed.

Fixes #1873.
Cover more cases.