Add support for go notebooks

[mwouts]

Closes #1244

[github-actions]

Thank you for making this pull request.

Did you know? You can try it on Binder: or .

Also, the version of Jupytext developed in this PR can be installed with pip:

HATCH_BUILD_HOOKS_ENABLE=true pip install git+https://github.com/mwouts/jupytext.git@support_gonb

(this requires nodejs, see more at Developing Jupytext)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.03%. Comparing base (508f4ea) to head (58383d8).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1250   +/-   ##
=======================================
  Coverage   97.02%   97.03%           
=======================================
  Files          29       29           
  Lines        4468     4479   +11     
=======================================
+ Hits         4335     4346   +11     
  Misses        133      133           

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[mwouts]

We need to escape the %% commands in Markdown cells too, that's why we might find multiple levels of comments.