mermaid support

[mar10]

No description provided.

[codecov]

Codecov Report

Attention: 12 lines in your changes are missing coverage. Please review.

Comparison is base (68e306f) 91.35% compared to head (5b9e05e) 91.03%.

❗ Current head 5b9e05e differs from pull request most recent head 7467d4b. Consider uploading reports for the commit 7467d4b to get more accurate results

Files	Patch %	Lines
nutree/mermaid.py	86.36%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #5      +/-   ##
==========================================
- Coverage   91.35%   91.03%   -0.32%     
==========================================
  Files           9       10       +1     
  Lines        1711     1807      +96     
==========================================
+ Hits         1563     1645      +82     
- Misses        148      162      +14     

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