Bug: unable to parse scientific notation with + symbol

[universalmind303]

This was first reported in polars. We are using arrow2 to infer the schema for ndjson data types, which looks like it is using this to crate deserialize json in the implementation of arrow2::io::ndjson::read::infer

Expected:

Number is parsed correctly
serde_json will parse as so: {"Value": Number(11000000000.0)}

Actual:

json_deserializer errors out with MissingComa(43) when trying to parse scientific notation with + symbol.

Steps to reproduce

fn main() {
    let mut s = br#"{"Value":1.1e+10}"#.to_vec();
    let v = json_deserializer::parse(&mut s);
    println!("{:?}", v);
}
// Err(MissingComa(43))

Note: the - symbol parses as expected.

fn main() {
    let mut s = br#"{"Value":1.1e-10}"#.to_vec();
    let v = json_deserializer::parse(&mut s);
    println!("{:?}", v);
}
// Ok(Object({"Value": Number(Float([49, 46, 49], [45, 49, 48]))}))