Fixup mypy matplotlib

[richardjgowers]

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[pep8speaks]

Hello @richardjgowers! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file openfe/utils/network_plotting.py:

Line 250:80: E501 line too long (85 > 79 characters)
Line 256:80: E501 line too long (88 > 79 characters)
Line 257:80: E501 line too long (84 > 79 characters)
Line 258:80: E501 line too long (88 > 79 characters)

Comment last updated at 2023-10-10 08:13:15 UTC

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (ab0ae26) 91.29% compared to head (a43daec) 91.32%.
Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #575      +/-   ##
==========================================
+ Coverage   91.29%   91.32%   +0.02%     
==========================================
  Files         117      117              
  Lines        7287     7300      +13     
==========================================
+ Hits         6653     6667      +14     
+ Misses        634      633       -1     

Files	Coverage Δ
openfe/analysis/plotting.py	100.00% <100.00%> (ø)
...enfe/protocols/openmm_utils/multistate_analysis.py	93.07% <100.00%> (ø)
openfe/utils/network_plotting.py	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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