Updated changelog for version 0.8
Updated changelog for version 0.8

willu47/smif,tomalrussell/smif,willu47/smif,tomalrussell/smif,nismod/smif,willu47/smif,tomalrussell/smif,tomalrussell/smif,willu47/smif,nismod/smif,nismod/smif,nismod/smif