add is_anonymous flag to tree nodes

[bartveneman]

closes #5

[codecov-commenter]

Bundle Report

Changes will increase total bundle size by 237 bytes (4.41%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
cssLayerTree-cssLayerTree-esm	3.13kB	142 bytes (4.76%) ⬆️
cssLayerTree-cssLayerTree-esm-cssLayerTree-umd	2.49kB	95 bytes (3.97%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: cssLayerTree-cssLayerTree-esm-cssLayerTree-umd

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
css-*.umd.cjs	95 bytes	2.49kB	3.97%

Files in css-*.umd.cjs:

• ./src/TreeNode.js → Total Size: 1.63kB

view changes for bundle: cssLayerTree-cssLayerTree-esm

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
css-*.js	142 bytes	3.13kB	4.76%

Files in css-*.js:

• ./src/TreeNode.js → Total Size: 1.63kB

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (d134631) to head (b1c8315).

Additional details and impacted files

@@            Coverage Diff            @@
##              main        #6   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          202       206    +4     
=========================================
+ Hits           202       206    +4     

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