Add a specialization of the 'IsIdentity' type trait for the 'TDMatSMatMultExpr' expression class
Add a specialization of the 'IsIdentity' type trait for the 'TDMatSMatMultExpr' expression class

ColinGilbert/blaze-lib,ironm73/blaze-lib,gnzlbg/blaze-lib,ColinGilbert/blaze-lib,lsalamon/blaze-lib,honnibal/blaze-lib,wsavoie/blaze-lib,dorofiykolya/blaze-lib,amaniak/blaze-lib,honnibal/blaze-lib,lsalamon/blaze-lib,wdv4758h/blaze-lib,ColinGilbert/blaze-lib,gnzlbg/blaze-lib,amaniak/blaze-lib,nyotis/blaze-lib,gnzlbg/blaze-lib,byzhang/blaze,ironm73/blaze-lib,nyotis/blaze-lib,wsavoie/blaze-lib,amaniak/blaze-lib,honnibal/blaze-lib,dorofiykolya/blaze-lib,dorofiykolya/blaze-lib,byzhang/blaze,wsavoie/blaze-lib,ironm73/blaze-lib,wdv4758h/blaze-lib,nyotis/blaze-lib,byzhang/blaze,lsalamon/blaze-lib,wdv4758h/blaze-lib