Additional arguments of FastAPI() not working, such as swagger_ui_parameters or description

**Describe the bug**
Some arguments of FastAPI() won't work

**To Reproduce**
Use argument swagger_ui_parameters={"docExpansion": "none"} and check that it won't work in the versioning, as it won't collapse the tabs.

**Expected behavior**
I expect all arguments of FastAPI() to work.

**Additional context**
I already did a PR with a quick fix. PR #71 