[WIP] Introduce default option drop-missing? for fold-by fn#163

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shellandbull wants to merge 3 commits intoscicloj:masterfrom shellandbull:fold-by-remove-missing

+16-11

Commits on Aug 18, 2024

halfway commit. I found the place where we define fold-by. I am trying to introduce the default argument as the function seems to call itself again with a folding function when no folding function …
shellandbull
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Commits on Aug 20, 2024

introduce remove-missing? which defaults to true but stays as true when assigned to false
shellandbull
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use drop-missing as its the commonly use variable name
shellandbull
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