message: Mention `wasmer-headless` in changelog
diff: @@ -20,6 +20,7 @@ This release includes a breaking change in the API (changing the trait `enumset:
  This change is unlikely to affect any users of `wasmer`, but if it does please change uses of the `enumset` crate to the `wasmer_enumset` crate where possible.
  ### Added
  +- [#2010](https://github.com/wasmerio/wasmer/pull/2010) A new, experimental, minified build of `wasmer` called `wasmer-headless` will now be included with releases. `wasmer-headless` is the `wasmer` VM without any compilers attached, so it can only run precompiled Wasm modules.
  - [#2005](https://github.com/wasmerio/wasmer/pull/2005) Added the arguments `alias` and `optional` to `WasmerEnv` derive's `export` attribute.
  ### Changed
  