Fix reference search code to search for references inside objects which are inside arrays.

[chisholm]

Fixes #48 .

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (afbe459) 90.50% compared to head (b74b2b3) 90.51%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #49      +/-   ##
==========================================
+ Coverage   90.50%   90.51%   +0.01%     
==========================================
  Files          35       35              
  Lines        3474     3480       +6     
==========================================
+ Hits         3144     3150       +6     
  Misses        330      330              

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