Release v0.3.0-rc.1

Major Features and Improvements

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• Support TO EVALUATE clause to evaluate a model.
• SQLFlow model zoo, support publicly share model definitions and models.
• Support mathematical programming using SQL.
• Support feature column in the XGBoost model, including training, evaluating, prediction, and explaining.
• Support incremental training for both TensorFlow and XGBoost models.
• Add logs to record runtime status.
• Command-line Tool support release/remove model/repo .
• Support SHOW TRAIN statement go get original SQL.
• Create the SQLFlow Playground as a quick-start environment.

Improvements

• Improve the user experience on workflow mode, including improving workflow log structure, return selected rows, and diagnostic message to the GUI system.
• Improve some diagnostic messages on the workflow model.
• Supports passing all the selected columns into the prediction result table.
• Decompose the all-in-one Docker image into separated Docker images.