Jupyter-packaging

- The import of `bdist_wheel` is optional, must check for `None` before using it [106](https://github.com/jupyter/jupyter-packaging/pull/106) ([ellert](https://github.com/ellert))

- Fix last one hardcoded unversioned python command [98](https://github.com/jupyter/jupyter-packaging/pull/98) ([frenzymadness](https://github.com/frenzymadness))
- Add note about using the build package [104](https://github.com/jupyter/jupyter-packaging/pull/104) ([blink1073](https://github.com/blink1073))

- Handle missing yarn [99](https://github.com/jupyter/jupyter-packaging/pull/99) ([blink1073](https://github.com/blink1073))

- Some fixes for issues discovered during packaging [96](https://github.com/jupyter/jupyter-packaging/pull/96) ([frenzymadness](https://github.com/frenzymadness))
- Disallow deprecated function return incorrect results for Python 3.10 [97](https://github.com/jupyter/jupyter-packaging/pull/97) ([frenzymadness](https://github.com/frenzymadness))
- Fix handling of module metadata in tests [92](https://github.com/jupyter/jupyter-packaging/pull/92) ([blink1073](https://github.com/blink1073))

- Fix Handling of npm Parameter [90](https://github.com/jupyter/jupyter-packaging/pull/90) ([jtpio](https://github.com/jtpio))

- Fix Handling of Skip If Exists [86](https://github.com/jupyter/jupyter-packaging/pull/86) ([jtpio](https://github.com/jtpio))