message: Remark const_err in changelog
  Lints do affects downstream libraries if they use `image` as a path
  dependency. Due to the spread of the library it seems somewhat likely to
  be the case somewhere.
diff: @@ -14,6 +14,8 @@ Rust image aims to be a pure-Rust implementation of various popular image format
  the bunch of free functions: `image::{load_*, open, image_dimensions}` while
  enabling new combinations such as `open` but with format deduced from content
  instead of file path.
  +- Fixed `const_err` lint in the macro expanded implementations of `Pixel`. This
  + can only affect your crate if `image` is used as a path dependency.
  ### Version 0.22.2
  