Pygraphic

What's Changed
* Support non-nullable parameters in queries by lonelyteapot in https://github.com/lonelyteapot/pygraphic/pull/4
* Implement automatic conversion to camelCase by lonelyteapot in https://github.com/lonelyteapot/pygraphic/pull/5
* Various fixes and refactors by lonelyteapot in https://github.com/lonelyteapot/pygraphic/pull/6

What's Changed
* Refactor examples by lonelyteapot in https://github.com/lonelyteapot/pygraphic/pull/2
* Support for queries with parameters by lonelyteapot in https://github.com/lonelyteapot/pygraphic/pull/3

- [Fix missing `__all__` used by linters](https://github.com/lonelyteapot/pygraphic/commit/e1c6e57e8ebcbf5bccbb393dce7da5d63031b324)