message: DOC: update RELEASE-NOTES for annotation capabilty
diff: @@ -10,6 +10,20 @@ The Axom project release numbers follow [Semantic Versioning](http://semver.org/
  ## [Unreleased] - Release date yyyy-mm-dd
  ### Added
  +- Added new CMake option, `AXOM_ENABLE_ANNOTATIONS`, to enable/disable code
  + annoations in Axom. Default is OFF.
  +- Added Axom annotation macros. The macros can be used to annotate functions,
  + using the `AXOM_ANNOTATE_FUNCTION` macro, or at a more fine grain level,
  + different sections of code can be annotated by wrapping them within an
  + `AXOM_ANNOTATE_SECTION` block. As a first cut, this works with NVTX tools.
  + However, the hooks are in place to add support for Caliper in the future.
  +- Added a simple interface to NVTX that allows an application to set the color
  + and category for NVTX ranges corresponding to annotated code in Axom. The
  + application can now call `axom::nvtx:set_color()` and
  + `axom::nvtx::set_category()` to set the corresponding parameters respectively.
  + This facilitates in the performance evaluation by allowing developers to easily
  + filter out calls by category or visually by setting a different color to use
  + in GUI tools, such as, NVVP and NSight.
  - Added a portable floating_point_limits traits class, to return min(), max(), lowest()
  and epsilon() of a `float` or `double` type. The functionality is equivalent to that provided by
  std::numeric_limits, but, the code is host/device decorated accordingly such that it
  