starts at implementing sigRelUnc
add nEventsIn
adding plots for w, wUnc, wErr, and associated funcs
adding effHadRelErr, effHadRelUnc, REMEMBER to change name when to SumWhadRelErr, SumWhadRelUnc
test point
setting errors to two
setting errors to two
adding wRelErr over fun of b
adding common weight variable
passing histogram names in scan
removing some hardcodes and adding needed weight funcs
adding weight variables
adding weight func
a move towards backward compatibility
adding weight switch
implement weight switch
name swap/change
name swap/change
fix weight switch
explicit naming of histo names