sgdgmf.rank : changed default method from "onatski" to "evr" methodeigengap.evr (new function) : implemented the eigenvalue ratio method for rank selectioneigengap.onatski : fixed bug occurring when no optimal rank can be selectedCXXFLAGS = $(CXXFLAGS) -Os to Makevars and Makevars.win files to optimize the memory space usad by compiled C++ files