start adding systematics
enable top pT reweighting
update file name
add CRs
add CRs
fix JES systematic
add scaling of bkgs to CRs
update CRs and SF calculation
add support for split DY (ee,mm and tautau), improve scaling, remove remaining hard coded indices
improve SF calculation
add new CRs and split DY into ee/mm and tautau
Merge pull request #14 from linacre/master

TopAFB updates