This is the release notes of v0.8.0a3. See here for the complete list of solved issues and merged PRs.

New Features

Tensor
- Implemented hypergeometric functions (#2397, thanks @Alfa-Shashank!)
- Implements mars.tensor.append (#2417)
DataFrame
- Implements Series.between (#2368, thanks @gowrijsuria!)
- Integrate Mars DataFrame with Ray MLDataset (#2294, thanks @vcfgv!)
- Support DataFrame.transpose() (#2327, thanks @hoarjour!)
Learn
- Add mars.learn.ensemble.{BlockwiseVotingClassifier, BlockwiseVotingRegressor} (#2390)
- Implements linear_model.LinearRegression (#2260, thanks @Fernadoo!)
- Add TensorFlow dataset (#2383, thanks @yuanchongtt!)
- Implements mars.learn.preprocessing.{LabelBinarizer,label_binarize} (#2415)
- Implements mars.learn.metrics.log_loss (#2418)
- Implements mars.learn.wrappers.ParallelPostFit (#2425)
Services
- Initially support auto scaling (#2210)
Web
- API for subtask DAG structure (#2389, thanks @RandomY-2!)

Bug fixes

Fix raising wrong error for an operand when post_execute implemented and error occurs in execute (#2395)
[Ray] Fix occasionally failed unittest test_ownership_when_scale_in (#2401)
[Oscar] Fix possible ActorCaller.call hang (#2404, thanks @Catch-Bull!)