Release v2022.9.8

What's Changed

• improve the case of upstream dependencies that mess up markers by @matteius in #5329
• Allow users to pass a string of extra arguments to pip by @matteius in #5283
• Deprecate the --three flag by @oz123 in #5328
• Fix typos by @tocic in #5330
• Convert test runner to use pypiserver package as standalone process by @matteius in #5284
• Fix extra indexes by @aronbierbaum in #5220
• Examine the 20 slowest tests and make improvements. by @matteius in #5331
• Load the dot env earlier by @matteius in #5334
• Bump vendored version of shellingham by @oz123 in #5336
• Bump plette version to v0.3.0 by @oz123 in #5337
• Actually load the dot env file before virtualenv creation. by @matteius in #5338
• Better editable detection by @matteius in #5342
• Bump pipdeptree by @oz123 in #5343

New Contributors

• @tocic made their first contribution in #5330
• @aronbierbaum made their first contribution in #5220

Full Changelog: v2022.9.4...v2022.9.8