add: support for setting TR in fsl.Merge
add: support for setting TR in fsl.Merge

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