doc/source/release/1.2.1-notes.rst
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SciPy 1.2.1 is a bug-fix release with no new features compared to 1.2.0. Most importantly, it solves the issue that 1.2.0 cannot be installed from source on Python 2.7 because of non-ascii character issues.
It is also notable that SciPy 1.2.1 wheels were built with OpenBLAS 0.3.5.dev, which may alleviate some linear algebra issues observed in SciPy 1.2.0.
#9606 <https://github.com/scipy/scipy/issues/9606>__: SyntaxError: Non-ASCII character '\xe2' in file scipy/stats/_continuous_distns.py on line 3346, but no encoding declared#9608 <https://github.com/scipy/scipy/issues/9608>__: Version 1.2.0 introduces too many indices for array error in...#9709 <https://github.com/scipy/scipy/issues/9709>__: scipy.stats.gaussian_kde normalizes the weights keyword argument...#9733 <https://github.com/scipy/scipy/issues/9733>__: scipy.linalg.qr_update gives NaN result#9724 <https://github.com/scipy/scipy/issues/9724>__: CI: Is scipy.scipy Windows Python36-32bit-full working?#9612 <https://github.com/scipy/scipy/pull/9612>__: BUG: don't use array newton unless size is greater than 1#9615 <https://github.com/scipy/scipy/pull/9615>__: ENH: Add test for encoding#9720 <https://github.com/scipy/scipy/pull/9720>__: BUG: stats: weighted KDE does not modify the weights array#9739 <https://github.com/scipy/scipy/pull/9739>__: BUG: qr_updates fails if u is exactly in span Q#9725 <https://github.com/scipy/scipy/pull/9725>__: TST: pin mingw for Azure Win CI#9736 <https://github.com/scipy/scipy/pull/9736>__: TST: adjust to vmImage dispatch in Azure#9681 <https://github.com/scipy/scipy/pull/9681>__: BUG: Fix failing stats tests (partial backport)#9662 <https://github.com/scipy/scipy/pull/9662>__: TST: interpolate: avoid pytest deprecations