Changes in version 1.0.1 (2021-06-15)                  

  - Fixed a namespace issue in calls to C functions.

                 Changes in version 1.0.0 (2019-02-20)                  

  - The function 	opt.stiefel has been sped-up dramatically.

                  Changes in version 0.20 (2018-06-12)                  

  - Added a function opt.stiefel that finds a local optimum of a
    function defined on the stiefel manifold, using algorithms described
    in Wen and Yin (2013).