updated CHANGELOG for bugfix release v3.3.1
updated CHANGELOG for bugfix release v3.3.1

ilios/ilios,Trott/ilios,ilios/ilios,justinchu17/ilios,dartajax/ilios,thecoolestguy/ilios,justinchu17/ilios,justinchu17/ilios,stopfstedt/ilios,stopfstedt/ilios,thecoolestguy/ilios,Trott/ilios,justinchu17/ilios,dartajax/ilios