Merge branch 'py3_pau' into 'master'

PhysicsAnalysis/PyAnalysis/PyAnalysisUtils/ispellwords

PhysicsAnalysis/PyAnalysis/PyAnalysisUtils/python/PDG.py

PhysicsAnalysis/PyAnalysis/PyAnalysisUtils/python/combo.py

...icsAnalysis/PyAnalysis/PyAnalysisUtils/python/draw_obj.py

...Analysis/PyAnalysis/PyAnalysisUtils/python/interpolate.py

PhysicsAnalysis/PyAnalysis/PyAnalysisUtils/python/pydraw.py

PhysicsAnalysis/PyAnalysis/PyAnalysisUtils/python/rebin2.py

...Analysis/PyAnalysis/PyAnalysisUtils/python/root_pickle.py

PhysicsAnalysis/PyAnalysis/PyAnalysisUtils/python/rtime.py

PhysicsAnalysis/PyAnalysis/PyAnalysisUtils/python/style.py

PhysicsAnalysis/PyAnalysis/PyAnalysisUtils/python/truth.py

...sis/PyAnalysis/PyAnalysisUtils/share/AthenaPyAlgorithm.py