This is the release of v2.2.0. See here for the complete list of solved issues and merged PRs.

New Features

• Add default casting option to ufunc (#812)

Improvements

• Remove cuDNN overhead (#748)

Bug Fixes

• Fix: RandomState.choice reproducibility (#775)
• fix to correctly display filename of CUDA dump (#778)
• Fix stack function bug (#798)
• Fix matmul to raise ValueError on invalid shapes (#816)
• Cast CUPY_SEED environment variable to uint64 (#822, thanks @toslunar!)
• Stop using dtype option of randint which is introduced in NumPy v1.11 (#830)

Documentation

• improve dependency description of docs (#770)
• fix typo in environment variable reference (#771)
• Add docs for missing argument (#790)
• Expose signatures to Reference (#809)
• fix ElementwiseKernel.__call__ docs (#810)
• fix wrong comment in test helper (#814)

Tests

• add test for argmin/argmax tie (#776)
• fix test to pass with numpy 1.9 (#806)
• Allow derived errors to pass equality tests (#811)
• Fix matmul test for old NumPy (#818)
• add pytest cache directory to gitignore (#800)
• Allow derived errors to pass equality tests (#811)