==========================
The NumPy 1.21.4 is a maintenance release that fixes a few bugs
discovered after 1.21.3. The most important fix here is a fix for the
NumPy header files to make them work for both x86\_64 and M1 hardware
when included in the Mac universal2 wheels. Previously, the header files
only worked for M1 and this caused problems for folks building x86\_64
extensions. This problem was not seen before Python 3.10 because there
were thin wheels for x86\_64 that had precedence. This release also
provides thin x86\_64 Mac wheels for Python 3.10.
The Python versions supported in this release are 3.7-3.10. If you want
to compile your own version using gcc-11, you will need to use gcc-11.2+
to avoid problems.
Contributors
------------
A total of 7 people contributed to this release. People with a \"+\" by
their names contributed a patch for the first time.
- Bas van Beek
- Charles Harris
- Isuru Fernando
- Matthew Brett
- Sayed Adel
- Sebastian Berg
- 傅立业（Chris Fu） +
Pull requests merged
--------------------
A total of 9 pull requests were merged for this release.
- [\20278](https://github.com/numpy/numpy/pull/20278): BUG: Fix shadowed reference of `dtype` in type stub
- [\20293](https://github.com/numpy/numpy/pull/20293): BUG: Fix headers for universal2 builds
- [\20294](https://github.com/numpy/numpy/pull/20294): BUG: `VOID_nonzero` could sometimes mutate alignment flag
- [\20295](https://github.com/numpy/numpy/pull/20295): BUG: Do not use nonzero fastpath on unaligned arrays
- [\20296](https://github.com/numpy/numpy/pull/20296): BUG: Distutils patch to allow for 2 as a minor version (!)
- [\20297](https://github.com/numpy/numpy/pull/20297): BUG, SIMD: Fix 64-bit/8-bit integer division by a scalar
- [\20298](https://github.com/numpy/numpy/pull/20298): BUG, SIMD: Workaround broadcasting SIMD 64-bit integers on MSVC\...
- [\20300](https://github.com/numpy/numpy/pull/20300): REL: Prepare for the NumPy 1.21.4 release.
- [\20302](https://github.com/numpy/numpy/pull/20302): TST: Fix a `Arrayterator` typing test failure
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