message: Update RELEASE-NOTES to make breaking change more explicit
diff: @@ -94,6 +94,8 @@ The Axom project release numbers follow [Semantic Versioning](http://semver.org/
  - Use more specific type trait checks in `ArrayOps`, to avoid generating unnecessary copies in
  fill/destroy operations on otherwise trivially-copyable/destructible types.
  - `axom::Array` now consistently propagates the allocator ID on copy, move, and swap operations when possible.
  + This is a breaking change; copy-construction of a dynamic array from a device array will no longer automatically
  + move the array to host memory, and will instead maintain the same allocator ID as the source array.
  ### Fixed
  - Fixed a bug relating to swap and assignment operations for multidimensional `axom::Array`s
  