* Pipenv 3000 install refactor
* add news fragment.
* Factor out do_install_dependencies from do_init as it made no sense; reduce down unused arguments; no longer perform full lock resolution during install commands.
* Fix other issues affecting the CI
* Factor out validations to eliminate ruff branching factor error.
* provide documentation updates for this important pipenv 3000 behavioral change.
* PR Feedback.
* Further refinements to the docs.
* Begin reviewing the basics docs.
* Check in delta
* More doc revisions.
* Split apart basics docs.
* Refactor based on building docs
* add the files back as markdown.
* more conversions to markdown.
* more conversions to markdown.
* fix markdown formatting.
* convert index to markdown.
* More docs review
* More markdown and doc revisions.
* Fix docs.
* Update doc build requirements.
* fix lint
* Fix build with update/upgrade command.
* remove useless quickstart and update the commands section.
* Fix lint
* change ordering of table of contents.
* fix changelog duplicate headings.
* Start splitting advanced topics.
* minor nits
* Move some sections from advanced to shell.
* remove this section as its stale and kind of off topic.
* move scripts out into its own section.
* Wrap up revisions1
* fix lint
* address PR feedback and other nits.
* fix lint
* Try improving ordering of table of contents, fix issue with indexes.md file location.
* fix lint
* PR feedback.
Matt Davis