message: DOC: document sphere class updates in CHANGELOG
diff: @@ -6,6 +6,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
  ## [Unreleased]
  +### Added
  +- Refactor and clean up the Primal's Sphere class, add a sphere-sphere intersection test and
  + associated unit test.
  +
  +
  +-
  ## [0.2.9] - 2017-03-08
  ### Added
  