* py-jupytext: add version 0.13.6
From da3fcc305d:
markdown-it-py v2.0 implements some internal changes, but won't affect jupytext
* py-jupytext: keep mdit-py version restricted to 1
* py-jupytext: update dependencies
* Apply suggestions from code review
Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>
* Apply suggestions from code review
Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>