Add a cookbook that enables floweaver to handle the path-visualization of highlighted-node (and combines floweaver with ipywidgets)

[fullflu]

I created a library that enables floweaver to handle the visualization of paths that pass through a selected node (highlighted-node).

This extension is a naive implementation of highlighting flows by selecting a node by ipywidgets.Dropdowns, instead of clicking a node #83 .

The implementation would also be a first cookbook that shows how to combine the floweaver with ipywidgets #67 .

Although I put template data and a template notebook here, the details of how to use them by docker are described in my repository ( https://github.com/fullflu/floweaver-path ) to maintain the extension easily.

I hope you to check the behavior of the extension and merge it as a cookbook.

If you have any questions, please feel free to ask me.

[codecov-io]

Codecov Report

Merging #87 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master     #87   +/-   ##
======================================
  Coverage    77.5%   77.5%           
======================================
  Files          18      18           
  Lines         947     947           
  Branches      249     249           
======================================
  Hits          734     734           
  Misses        173     173           
  Partials       40      40

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.50%. Comparing base (a0a8af9) to head (f24e790).
⚠️ Report is 57 commits behind head on master.
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Additional details and impacted files

@@           Coverage Diff           @@
##           master      #87   +/-   ##
=======================================
  Coverage   77.50%   77.50%           
=======================================
  Files          18       18           
  Lines         947      947           
  Branches      249      249           
=======================================
  Hits          734      734           
  Misses        173      173           
  Partials       40       40           

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