Create Release v10.0.0.

[capn-freako]

General Description

This "developers only" release finishes our move from pip to uv, begun with PyIBIS-AMI, and our elimination of Tox as a "middle-man".

Note: There are no changes to either the API or the user GUI experience in this release.

Remaining ToDos

1. Remove custom chaco/enable dependencies.
2. Update Instant Gratification instructions to reflect 1., above.