Update simple pythia test samples with correct status codes
Add method to get particle/vertex obj in event by barcode
Add helper fn to set in/out vertex for edgeAttributes
Update NodeToEdge conversion so all mothers wired up correctly
Add function to add inVertices for all final state particles
pep8 corrections
add vertices for final state particles to pythiaParser after conversion
Change to assertEqual
Move addVertices for final particles to central PythiaPlotterNew