Bump scipy from 1.1.0 to 1.4.0

[dependabot-preview]

Bumps scipy from 1.1.0 to 1.4.0.

Release notes

Sourced from scipy's releases.

SciPy 1.4.0 Release Notes

SciPy 1.4.0 is the culmination of 6 months of hard work. It contains
many new features, numerous bug-fixes, improved test coverage and better
documentation. There have been a number of deprecations and API changes
in this release, which are documented below. All users are encouraged to
upgrade to this release, as there are a large number of bug-fixes and
optimizations. Before upgrading, we recommend that users check that
their own code does not use deprecated SciPy functionality (to do so,
run your code with python -Wd and check for DeprecationWarning s).
Our development attention will now shift to bug-fix releases on the
1.4.x branch, and on adding new features on the master branch.

This release requires Python 3.5+ and NumPy >=1.13.3 (for Python 3.5, 3.6),
>=1.14.5 (for Python 3.7), >= 1.17.3 (for Python 3.8)

For running on PyPy, PyPy3 6.0+ and NumPy 1.15.0 are required.

Highlights of this release

• a new submodule, scipy.fft, now supersedes scipy.fftpack; this
  means support for long double transforms, faster multi-dimensional
  transforms, improved algorithm time complexity, release of the global
  intepreter lock, and control over threading behavior
• support for pydata/sparse arrays in scipy.sparse.linalg
• substantial improvement to the documentation and functionality of
  several scipy.special functions, and some new additions
• the generalized inverse Gaussian distribution has been added to
  scipy.stats
• an implementation of the Edmonds-Karp algorithm in
  scipy.sparse.csgraph.maximum_flow
• scipy.spatial.SphericalVoronoi now supports n-dimensional input,
  has linear memory complexity, improved performance, and
  supports single-hemisphere generators

New features

Infrastructure

Documentation can now be built with runtests.py --doc

A Dockerfile is now available in the scipy/scipy-dev repository to
facilitate getting started with SciPy development.

scipy.constants improvements

... (truncated)

Commits

• f533e91 REL: set version to 1.4.0
• 2d85bb2 Merge pull request #11221 from tylerjereddy/scipy-140-rel-prep
• c705210 DOC: update 1.4.0 release notes
• be5fe99 BUG: sparse.linalg: mistake in unsymm. real shift-invert ARPACK eigenvalue se...
• 119bf01 TST: Bump up tolerance for test_maxiter_worsening
• 2613755 TST: Remove XFAIL markers for ppc64le
• 295cb2d TST: Fix tolerance of some tests
• 30be812 REL: bump version to 1.4.0 "final"
• 1a4463e REL: set version to 1.4.0rc2
• 6a00a39 Merge pull request #11161 from tylerjereddy/backports_140_rc2
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #49.