Add aggregations to visualization

[tfiedor]

Adds option of aggregation to visualization.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.17%. Comparing base (f71714f) to head (30223ed).

Additional details and impacted files

@@            Coverage Diff             @@
##            devel     #248      +/-   ##
==========================================
- Coverage   99.18%   99.17%   -0.01%     
==========================================
  Files         150      150              
  Lines       10273    10295      +22     
==========================================
+ Hits        10189    10210      +21     
- Misses         84       85       +1     

Flag	Coverage Δ
coverage-3.10	99.17% <100.00%> (+<0.01%)	⬆️
coverage-3.11	99.17% <100.00%> (-0.01%)	⬇️
coverage-3.12	?
coverage-3.9	99.17% <100.00%> (+<0.01%)	⬆️

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