message: ENH: log Mint changes in changelog
  Logs changes in Mint for integrating with Sidre and
  refactoring in preparation for GPUs.
diff: @@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
  ## [Unreleased]
  ### Added
  +- Tight integration of Mint and Sidre. Mint can now operate on meshes stored in
  + Sidre and conform to the [computation mesh blueprint conventions](http://llnl-conduit.readthedocs.io/en/latest/).
  - Added a sphere-sphere intersection test to Primal.
  - Added a utility function to Quest to *weld* vertices in a triangle mesh that are within
  a given tolerance. After welding, all triangles incident in a vertex have the same
  @@ -23,7 +25,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
  ### Changed
  - Refactored and cleaned up Primal's Sphere class.
  --
  +- Refactored Mint and removed all STL usage in preparation for GPUs.
  +
  ### Removed
  - Axom no longer depends on the Boost library.
  