* Add support for enumerations in *path operation* parameters. New documentation: [Path Parameters: Predefined values](https://fastapi.tiangolo.com/tutorial/path-params/#predefined-values).

m-control {\n  &[size],\n  &[multiple] {\n    height: auto;\n  }\n}\n\ntextarea.form-control {\n  height: auto;\n}\n\n// Form groups\n//\n// Designed to help with the organization and spacing of vertical forms. For\n// horizontal forms, use the predefined grid classes.\n\n.form-group {\n  margin-bottom: $form-group-margin-bottom;\n}\n\n.form-text {\n  display: block;\n  margin-top: $form-text-margin-top;\n}\n\n\n// Form grid\n//\n// Special replacement for our grid system's `.row` for tighter form...