Support multiple metric arguments per stage.
Support multiple metric arguments per stage.

carolFrohlich/nipype,dgellis90/nipype,grlee77/nipype,JohnGriffiths/nipype,dgellis90/nipype,carolFrohlich/nipype,dgellis90/nipype,grlee77/nipype,dmordom/nipype,dmordom/nipype,arokem/nipype,wanderine/nipype,sgiavasis/nipype,FCP-INDI/nipype,mick-d/nipype_source,iglpdc/nipype,rameshvs/nipype,blakedewey/nipype,gerddie/nipype,carlohamalainen/nipype,glatard/nipype,Leoniela/nipype,JohnGriffiths/nipype,wanderine/nipype,iglpdc/nipype,carolFrohlich/nipype,rameshvs/nipype,blakedewey/nipype,arokem/nipype,grlee77/nipype,blakedewey/nipype,pearsonlab/nipype,fprados/nipype,pearsonlab/nipype,blakedewey/nipype,mick-d/nipype_source,mick-d/nipype,wanderine/nipype,rameshvs/nipype,glatard/nipype,sgiavasis/nipype,dgellis90/nipype,carlohamalainen/nipype,FredLoney/nipype,gerddie/nipype,glatard/nipype,iglpdc/nipype,Leoniela/nipype,mick-d/nipype_source,FCP-INDI/nipype,FredLoney/nipype,iglpdc/nipype,fprados/nipype,grlee77/nipype,carolFrohlich/nipype,JohnGriffiths/nipype,arokem/nipype,pearsonlab/nipype,FCP-INDI/nipype,gerddie/nipype,dmordom/nipype,FCP-INDI/nipype,rameshvs/nipype,FredLoney/nipype,sgiavasis/nipype,arokem/nipype,fprados/nipype,carlohamalainen/nipype,pearsonlab/nipype,glatard/nipype,sgiavasis/nipype,Leoniela/nipype,gerddie/nipype,JohnGriffiths/nipype,mick-d/nipype,mick-d/nipype,wanderine/nipype,mick-d/nipype