message: Improve performance benchmarking documentation
  Fixes
diff: @@ -67,9 +67,16 @@ complete correctly with the unpatched version, to make sure the test case is cov
  ### Performance
  +If changes could affect throughput or latency of Alacritty, these aspects should be benchmarked to
  +prevent potential regressions. Since there are often big performance differences between Rust's
  +nightly releases, it's advised to perform these tests on the latest Rust stable release.
  +
  Alacritty mainly uses the [vtebench](https://github.com/jwilm/vtebench) tool for testing Alacritty's
  -performance. Any change which could have an impact on Alacritty's performance, should be tested with
  -it to prevent potential regressions.
  +performance. Instructions on how to use it can be found in its
  +[README](https://github.com/jwilm/vtebench/blob/master/README.md).
  +
  +Latency is another important factor for Alacritty. On X11, Windows, and macOS the
  +[typometer](https://github.com/pavelfatin/typometer) tool allows measuring keyboard latency.
  ### Documentation
  