I would like to be able to sort form data fields that contain floating point numbers by type casting to floats. Currently sorting by typecasting to integer doesn't even work properly ([http://feedback.wikidot.com/bug:1062]).
If my field contains: "5", "3", "3.7", "15.2", "19.25", "3.3", I'd like to typecast to float the same way one does to integer (order="_weight::float"), for it to be sorted "3", "3.3", "3.7", "5", "15.2", "19.25".
Proposed syntax is identical to current integer typecasting.