csvformat: --out-quoting 2 requires type inference

Created by: CharlesNepote

echo "A,B,1,2018" | csvformat -U 2 is giving: "A","B","1","2018"

-U 2 stands for "2 = Quote Non-numeric". Does it mean that it should produce: "A","B",1,2018

$ csvformat -V
csvformat 1.0.2