This is the release note of v2.5.0. See here for the complete list of solved issues and merged PRs.

Improvements

• Improve error message when import failed (#1029)
• Fix coding style for chained comparisons (#961)
• Prefer double quoted docstring to single quoted docstring (#962)

Bug Fixes

• Fix return type of linalg.norm when its input is complex (#869, thanks @kohr-h!)
• Fix multithread bug with CUDA driver API (#972)
• Fix overflow in indices when indexing (#984, thanks @yuyu2172!)
• Fix ndarray.diagonal to accept an appropriate argument of axis2 (#992, thanks @ronekko!)
• Remove trailing NULL from values returned from NVRTC (#1033)
• Fix cupy.copyto to ignore where argument when src is scalar (#1035)

Documentation

• Add upgrade guide for v2 (#990)
• Fix typo (#1016, thanks @juniorrojas!)
• Use pip in documentation (#1031)
• Document more on CuPy/NumPy differences (#1032)
• Prefer NumPy dtype objects over character codes in documentation (#963)

Tests

• Fix sum test to avoid contiguousness difference between CuPy and NumPy (#995)
• Add Codecov.io configuration (#1004)