message: Add CHANGES entrie
diff: @@ -11,6 +11,7 @@ Rust image aims to be a pure-Rust implementation of various popular image format
  ### Unreleased
  +- The `as_rgb32f` function of `DynamicImage` is now correctly documented
  - More convenient to use buffers will be added in the future. In particular,
  improving initialization, passing of output buffers, and adding a more
  complete representation for layouts. The plan is for these to interact with
  