Improve unknown crate_type diagnostic suggestions I have improved the suggestions given in the unknown crate_type diagnostic. Before (no suggestion): ``` error: invalid `crate_type` value --> bad_error.rs:1:17 | 1 | #![crate_type = "binary"] | ^^^^^^^^ | = note: `#[deny(unknown_crate_types)]` on by default ``` After: ``` error: invalid `crate_type` value --> bad_error.rs:1:17 | 1 | #![crate_type = "binary"] | ^^^^^^^^ help: did you mean: `"bin"` | = note: `#[deny(unknown_crate_types)]` on by default ``` By increasing the allowed edit distance for the matching, as well as allowing substring matches, this now also works for mistakes like `dynamiclib`, where it will suggest `dylib`, and `cdylibrary` where it suggests `cdylib`. r? @JonathanBrouwer