LightGBM
- Improves lightgbm conversion speed #491
- Fix discovering classifier objective #480
- Fix missing type in lgbm regressor #488
- Support gamma objective in LGBMRegressor #484
- Allow to add custom post transform functions that are not supported by the ONNX spec yet #463
- Enable option zipmap for LGBM converter #452
XGBoost
- Use all tree when best_ntree_limit is not specified #459
- Fix discrepencies when xgboost trees are empty #447
Keras
- Switch to tf2onnx for tensorflow>=2.0 instead of keras2onnx #492