Adapt Constructionbase and add AlignedStyle for zipped tree traversal

[chengchingwen]

No description provided.

[codecov]

Codecov Report

Merging #4 (43f13b4) into main (cf5bf72) will decrease coverage by 11.34%.
The diff coverage is 80.95%.

@@             Coverage Diff             @@
##             main       #4       +/-   ##
===========================================
- Coverage   92.59%   81.25%   -11.35%     
===========================================
  Files           2        4        +2     
  Lines          27      112       +85     
===========================================
+ Hits           25       91       +66     
- Misses          2       21       +19     

Impacted Files	Coverage Δ
src/aligned.jl	72.50% <72.50%> (ø)
src/StructWalk.jl	78.12% <76.00%> (-12.79%)	⬇️
src/scan.jl	90.32% <90.32%> (ø)
src/walkstyle.jl	100.00% <100.00%> (ø)

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