added str2bool converter
added str2bool converter

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