Upgrade to scmdata 0.7.1

[znicholls]

Pull request

Please confirm that this pull request has done the following:

• [x] Tests added
• [x] Documentation added (where applicable)
• [x] Example added (either to an existing notebook or as a new notebook, where applicable) (N/A)
• [x] Description in CHANGELOG.rst added

Adding to CHANGELOG.rst

Please add a single line in the changelog notes similar to one of the following:

- (`#XX <http://link-to-pr.com>`_) Added feature which does something
- (`#XX <http://link-to-pr.com>`_) Fixed bug identified in (`#XX <http://link-to-issue.com>`_)

[codecov[bot]]

Codecov Report

Merging #83 into master will not change coverage. The diff coverage is 87.50%.

@@           Coverage Diff           @@
##           master      #83   +/-   ##
=======================================
  Coverage   94.79%   94.79%           
=======================================
  Files          42       42           
  Lines        1786     1786           
=======================================
  Hits         1693     1693           
  Misses         93       93           

Impacted Files	Coverage Δ
fair/tools/scmdf.py	91.66% <87.50%> (ø)

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