Fix miniconda 3.7 CI error

[rly]

Motivation

The CI for miniconda 3.7 on CircleCI is broken due to an incompatibility between some combination of Python 3.7, tox, virtualenv, and importlib-metadata.

AttributeError: 'dict' object has no attribute 'select'

See also pypa/virtualenv#2174

Fixing this seems to then break the pandas installation. This has yet to be resolved.

This affects both PyNWB and HDMF.

Checklist

• Did you update CHANGELOG.md with your changes?
• Have you checked our Contributing document?
• Have you ensured the PR clearly describes the problem and the solution?
• Is your contribution compliant with our coding style? This can be checked running flake8 from the source directory.
• Have you checked to ensure that there aren't other open Pull Requests for the same change?
• Have you included the relevant issue number using "Fix #XXX" notation where XXX is the issue number? By including "Fix #XXX" you allow GitHub to close issue #XXX when the PR is merged.

[bendichter]

@rly this does not appear to work

[skapin]

Fix version of importmetadata fix the trouble for me

I used
importlib-metadata=1.7.0 importlib_metadata=1.7.0

[codecov]

Codecov Report

Merging #1427 (be09f67) into dev (21524b3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #1427   +/-   ##
=======================================
  Coverage   77.46%   77.46%           
=======================================
  Files          37       37           
  Lines        2733     2733           
  Branches      455      455           
=======================================
  Hits         2117     2117           
  Misses        535      535           
  Partials       81       81           

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[rly]

This PR also fixes two other issues:

• Azure Pipelines is deprecating the vs2017-win2016 image. Replace this with the regularly updating windows-latest image. Similarly replace macos-10.15 with the regularly updating macos-latest image.
• There is an incompatibility between resolve jinja2 and markupsafe which are used by allensdk. This issue is not yet resolved: Evaluate pinning requirements to jinja > 3 to allow readthedocs to build with new MarkupSafe AllenInstitute/AllenSDK#2308