json to jsonb convert

[simprl]

[codecov[bot]]

Codecov Report

Merging #98 (738126f) into main (721c2c7) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main       #98   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           26        26           
  Lines          754       755    +1     
=========================================
+ Hits           754       755    +1     

Impacted Files	Coverage Δ
lib/types.js	100.00% <ø> (ø)
lib/objects/table/change-rules.js	100.00% <100.00%> (ø)

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[mitar]

I think it would be useful to have a way to register custom allowed transformations (or even SQL code for conversion).