message: changelog: 1.5.0
diff: +1.5.0 (2021-04-30)
  +==================
  +This release primarily updates to Rust 2018 (finally) and bumps the MSRV to
  +Rust 1.41 (from Rust 1.28). Rust 1.41 was chosen because it's still reasonably
  +old, and is what's in Debian stable at the time of writing.
  +
  +This release also drops this crate's own bespoke substring search algorithms
  +in favor of a new
  +[`memmem` implementation provided by the `memchr` crate](https://docs.rs/memchr/2.4.0/memchr/memmem/index.html).
  +This will change the performance profile of some regexes, sometimes getting a
  +little worse, and hopefully more frequently, getting a lot better. Please
  +report any serious performance regressions if you find them.
  +
  +
  1.4.6 (2021-04-22)
  ==================
  This is a small patch release that fixes the compiler's size check on how much
  