Clientele

* Fixes a bug when generating HTTP Authentication schema.
* Fixes a bug when generating input classes for post functions, when the input schema doesn't exist yet.
* Generates pythonic function names in clients now, always (like `lower_case_snake_case`).

* Now generates a `MANIFEST` file with information about the build versions
* Added a `constants.py` file to the output if one does not exist yet, which can be used to store values that you do not want to change between subsequent re-generations of the clientele client, such as the API base url.
* Authentication patterns now use `constants.py` for constants values.
* Removed `ipython` from package dependencies and moved to dev dependencies.
* Documentation! [https://phalt.github.io/clientele/](https://phalt.github.io/clientele/)

* Improved CLI output
* Code organisation is now sensible and not just one giant file
* Now supports an openapi spec generated from a dotnet project (`Microsoft.OpenApi.Models`)
* async client support fully working
* HTTP Bearer support
* HTTP Basic support

* Initial version
* Mostly works with a simple FastAPI generated spec (3.0.2)
* Works with Twilio's spec (see example_openapi_specs/ directory) (3.0.1)
* Almost works with stripes