Integer support #210
Extend the number value variant to distinguish between signed integers and floats. Add a doc test for map_to on Number. Added Number::Integer constructors from: - u64 since we get these for positive integers from the parser. - i32 since integers default to i32 in Rust, making the simple integer construction compile: Number::new(3) -> Number::Integer(3)
Maybe related to:
Update - We are continuing to work on a fix for the elevated error rates.