Do not return html by default in itables.sample_dfs.get_countries

[mwouts]

This will simplify the examples in the documentation

[github-actions]

Thank you for making this pull request.

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

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

pip install git+https://github.com/mwouts/itables.git@no_html_by_default_in_get_countries

(this requires nodejs, see more at Developing ITables)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 88.16%. Comparing base (9f834aa) to head (7ab1401).

Files with missing lines	Patch %	Lines
apps/shiny/issue_360/app.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #430   +/-   ##
=======================================
  Coverage   88.16%   88.16%           
=======================================
  Files          50       50           
  Lines        2028     2028           
=======================================
  Hits         1788     1788           
  Misses        240      240           

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