Pin sphinx_rtd_theme version

[connortann]

Closes #227

From experimentation:

• Pinning an older version of sphinx-rtd-theme seems to fix the issue
• Removing the autoclasstoc extension does not fix the issue
• Changing the theme to "classic" does not seem to fix the issue

[andy-beer]

The readthedocs docs version is rendering correctly for me, I guess based on this pin @connortann

[connortann]

Yes seems to work for me too. I might investigate removing the autoclasstoc sphinx extension instead, to help debug the root cause, so I can raise an issue report with the relevant tool.

[connortann]

@andy-beer would you kindly create an account on https://readthedocs.org/ , so I can add you as a maintainer?

[codecov-commenter]

Codecov Report

Merging #228 (ceb7c5d) into master (5a96b98) will increase coverage by 0.00%.
The diff coverage is n/a.

❗ Current head ceb7c5d differs from pull request most recent head 3ca98f6. Consider uploading reports for the commit 3ca98f6 to get more accurate results

@@           Coverage Diff           @@
##           master     #228   +/-   ##
=======================================
  Coverage   51.81%   51.81%           
=======================================
  Files          53       53           
  Lines       25298    25298           
=======================================
+ Hits        13107    13108    +1     
+ Misses      12191    12190    -1     

Impacted Files	Coverage Δ
resqpy/model.py	66.22% <0.00%> (+0.06%)	⬆️

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[andy-beer]

@connortann I have created a readthedocs account where I am andy_beer