Package views "NaN" as an invalid number

[raisfeld-ori]

I recently tried parsing a dxf file with a NaN inside of it, and realized that running Drawing::load(&mut Cursor::new(content)); results in the error: Err("invalid float literal at line/offset 74"). looking at the dxf file, line 74 is
NaN.0

Which means it failed in parsing it since it viewed NaN as an invalid float