updated changelog

Author: chrisgorgo

CHANGES

@@ -1,6 +1,7 @@
 Next release
 ============
 
+* ENH: Added SLURMGraph plugin for submitting jobs to SLURM with dependencies (https://github.com/nipy/nipype/pull/1136)
 * FIX: Enable absolute path definitions in DCMStack (https://github.com/nipy/nipype/pull/1089,
        replaced by https://github.com/nipy/nipype/pull/1093)
 * ENH: New mesh.MeshWarpMaths to operate on surface-defined warpings