Ignore if_not_else Clippy pedantic lint

    error: unnecessary boolean `not` operation
       --> src/number.rs:367:24
        |
    367 |                   } else if !b.is_nan() {
        |  ________________________^
    368 | |                     Ordering::Greater
    369 | |                 } else {
    370 | |                     Ordering::Equal
    371 | |                 }
        | |_________________^
        |
        = note: `-D clippy::if-not-else` implied by `-D clippy::pedantic`
        = help: remove the `!` and swap the blocks of the `if`/`else`
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_not_else

src/lib.rs

@@ -73,6 +73,7 @@
     clippy::should_implement_trait,
     // things are often more readable this way
     clippy::cast_lossless,
+    clippy::if_not_else,
     clippy::match_same_arms,
     clippy::module_name_repetitions,
     clippy::needless_pass_by_value,