errors

The Display impl for Simple shows raw output and expectations, which is awkward for whitespace, such as '\n':

Example:

use chumsky::primitive::{end, just};
use chumsky::Parser;

type Error = chumsky::error::Simple<char>;

fn main() {
    match parser().then_ignore(end()).parse("\nblah") {
        Ok(_) => panic!("Should not happen."),
        Err(es) => {
            for e 

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[x] Bug report  
[ ] Performance issue
[ ] Feature request
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