Bump xarray from 0.15.1 to 0.16.2

[dependabot-preview]

Bumps xarray from 0.15.1 to 0.16.2.

Release notes

Sourced from xarray's releases.

v0.16.2

This release brings the ability to write to limited regions of zarr files, open zarr files with open_dataset and open_mfdataset, increased support for propagating attrs using the keep_attrs flag, as well as numerous bugfixes and documentation improvements.

v0.16.1

This patch release fixes an incompatibility with a recent pandas change, which was causing an issue indexing with a datetime64. It also includes improvements to rolling, to_dataframe, cov & corr methods and bug fixes. Our documentation has a number of improvements, including fixing all doctests and confirming their accuracy on every commit.

v0.16.0

This release adds xarray.cov & xarray.corr for covariance & correlation respectively; the idxmax & idxmin methods, the polyfit method & xarray.polyval for fitting polynomials, as well as a number of documentation improvements, other features, and bug fixes. Many thanks to all 44 contributors who contributed to this release.

Commits

• cc53a77 Release v0.16.2
• 8c863c9 examples for interp and interpolate_na (#4621)
• 255bc8e docstrings for isnull and notnull (#4618)
• d1faca5 Refactor the pytest test summary info parsing script (#4619)
• 1a4f7bd Update whats-new for 0.16.2 (#4611)
• a04aa25 plot tests: ensure all figures are closed (#4600)
• 70c3817 document the option to pass a function to where (#4613)
• 5883a46 Direct users to GitHub discussions page for usage questions (#4578)
• 16b15db add freq as CFTimeIndex property and to CFTimeIndex.repr (#4597)
• bad150f update sphinx to v3.3 (#4606)
• Additional commits viewable in compare view

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