Finish porting FixedRankEmbedded methods
Finish porting FixedRankEmbedded methods

Signed-off-by: Jamie Townsend <712d3bf917252432b8abdc41edb77e32fa2cc414@gmail.com>

tingelst/pymanopt,pymanopt/pymanopt,pymanopt/pymanopt,nkoep/pymanopt,nkoep/pymanopt,j-towns/pymanopt,nkoep/pymanopt