* Add ONNX classes to main package
* Remove permalinks from ONNX guide
* Fix ToC entry
* Revert "Add ONNX classes to main package"
This reverts commit eb794a5b00.
* Add ONNX classes to main doc
* Fix syntax highlighting in doc
* Fix text
* Add FeaturesManager to doc
* Use paths to reference ONNX classes
* Add FeaturesManager to init
* Add missing ONNX paths