v4.21.0

What's Changed

• Fix the behavior of enum in the presence of 0 or 1 to properly consider True and False unequal (#1208).
• Special case the error message for {min,max}{Items,Length,Properties} when they're checking for emptiness rather than true length.

New Contributors

• @otto-ifak made their first contribution in #1208

Full Changelog: v4.20.0...v4.21.0