added preselection histograms
3-step hadd
load lumis from json
fresh start
convert to string
load xs from metadata
long skim
no jld output
added json output
added metadata files
Merge branch 'master' of github.com:HEP-KBFI/stpol
use ROOT TTree
better recursive hadd
load lumis from metadata
histogram projection in loop
added script to prepare cards for bdt scan
modularized
export statements
loop over scenarios
modularized