Ignore needless_lifetimes clippy lint

    warning: the following explicit lifetimes could be elided: 'de
      --> src/inherit.rs:23:6
       |
    23 | impl<'de> Visitor<'de> for True {
       |      ^^^          ^^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
       = note: `-W clippy::needless-lifetimes` implied by `-W clippy::all`
       = help: to override `-W clippy::all` add `#[allow(clippy::needless_lifetimes)]`
    help: elide the lifetimes
       |
    23 - impl<'de> Visitor<'de> for True {
    23 + impl Visitor<'_> for True {
       |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/normalize.rs:158:6
        |
    158 | impl<'a> Filter<'a> {
        |      ^^         ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
    help: elide the lifetimes
        |
    158 - impl<'a> Filter<'a> {
    158 + impl Filter<'_> {
        |

src/lib.rs

@@ -223,6 +223,7 @@
     clippy::module_inception,
     clippy::module_name_repetitions,
     clippy::must_use_candidate,
+    clippy::needless_lifetimes,
     clippy::needless_pass_by_value,
     clippy::non_ascii_literal,
     clippy::range_plus_one,