message: ENH: document fix for BVH async in release notes
diff: @@ -51,6 +51,10 @@ The Axom project release numbers follow [Semantic Versioning](http://semver.org/
  ex. `level_error` is now `message_error`.
  ### Fixed
  +- Fixed issue where the BVH would dispatch to the CPU sort() routine when the
  + specified execution policy was CUDA_EXEC async. Now, when the execution policy
  + is CUDA_EXEC the code would correctly dispatch to the GPU sort, using CUB
  + (when CUB is enabled), regardless of whether it's synchronous or asynchronous.
  - Fixed issue with missing the bvh_traverse.hpp from the install prefix, which was preventing
  applications from using the BVH when pointing to an Axom install prefix.
  - Fixed usage of cuda kernel policies in Mint. Raja v0.11.0 changed the way max threads
  