Uqbar

What's Changed
* Test kwarg-only objects.get_vars() by josiah-wolf-oberholtzer in https://github.com/josiah-wolf-oberholtzer/uqbar/pull/83

**Full Changelog**: https://github.com/josiah-wolf-oberholtzer/uqbar/compare/v0.6.7...v0.6.8

What's Changed
* Use duped showtraceback to avoid spurious doctest lines by josiah-wolf-oberholtzer in https://github.com/josiah-wolf-oberholtzer/uqbar/pull/82
* Add Python 3.11 to GHA matrix by josiah-wolf-oberholtzer in https://github.com/josiah-wolf-oberholtzer/uqbar/pull/72


**Full Changelog**: https://github.com/josiah-wolf-oberholtzer/uqbar/compare/v0.6.6...v0.6.7

What's Changed
* Fix implicit optionals by josiah-wolf-oberholtzer in https://github.com/josiah-wolf-oberholtzer/uqbar/pull/65


**Full Changelog**: https://github.com/josiah-wolf-oberholtzer/uqbar/compare/v0.6.3...v0.6.4