Log Message:
py-traitlets: updated to 5.10.0

5.10.0

Enhancements made

Added type hints to HasTraits.observe() and friends.
feat: trait typing

Maintenance and upkeep improvements

Fix mypy deps and support Python 3.8-3.12
Update pytest requirement from <7.2,>=7.0 to >=7.0,<7.5
Bump actions/checkout from 3 to 4
Fix typing
Update docs config
Use local coverage
Adjust argcomplete typings
Better warnings
Update typings

Documentation improvements

rename MyClass to School
Even though returning a value from a validation method is ideal, by no means is \ 
proposal['value'] the only thing that can be returned
Document help parameter of TraitType.init().

Other merged PRs

Clean up license