updated CHANGELOG and setup.py for release of 0.12.0
updated CHANGELOG and setup.py for release of 0.12.0

indera/redi,indera/redi,nrejack/redi,nrejack/redi,nrejack/redi,nrejack/redi,nrejack/redi,KevinHanson/redi,KevinHanson/redi,KevinHanson/redi,KevinHanson/redi,KevinHanson/redi,KevinHanson/redi,KevinHanson/redi,indera/redi,nrejack/redi,indera/redi,nrejack/redi,indera/redi,indera/redi