This is the release note of v6.6.0. See here for the complete list of solved issues and merged PRs.

Highlights

Python 3.8 is now officially supported and we are providing wheels for this version.

Enhancements

• Support complex dtypes in cupy.where (#2615, thanks @AntoineDujardin!)
• Update __cuda_array_interface__ to protocol version 2 (#2669, thanks @leofang!)
• Remove cupy.cupyx (#2724)
• Support Python 3.8 on Windows (#2751)

Bug Fixes

• Make exceptions picklable (#2567)
• Support 0-sized arrays for linalg.qr (#2602, thanks @IvanYashchuk)
• Do not allow reshape on empty arrays (#2652)
• Cache ElementwiseKernel kernel globally instead of per instance (#2659)
• Handle tuple with value 0 and return empty array (#2706, thanks @quasiben!)

Code Fixes

• Remove insignificant assertion (#2719)

Documentation

• Document more environment variables (#2612, thanks @leofang!)
• Update CODE_OF_CONDUCT typo (#2628)
• Fix document format of as_strided (#2713)
• Update requirements (#2755)

Tests

• Add missing FlexCI configurations (#2591)
• Add FlexCI configurations (#2715)
• Skip tests that segfault when using SciPy 1.3.x (#2721, thanks @grlee77!)
• Fix broken version specification in FlexCI dockerfiles (#2736)

Installation

• Package tests in sdist (#2572, thanks @jakirkham!)
• Fix url to use the home page address (#2590)
• Import CUDA headers from CUDA 10.1 Update 2 (10.1.243) (#2605)
• Fix invaild requirements (#2640)
• Add software description to setup.py (#2653)

Examples

• Show better performance improvement in examples/stream/map_reduce.py (#2603, thanks @leofang!)

Others

• Fix AttributeError of stride_tricks (#2705)