v0.2.0
      initial checkin
      improve description
      import all routines by default
      limit imports, rename index, add hyperbolic_secant_profile_index
      ignore checkpoint dir
      fix importing, update for new names
      Merge branch 'master' of https://github.com/scottprahl/pygrin

v0.2.0
      fix typos
      change status to alpha
      update version
      update version
      update version
