added option to test event loop
 comments
comments, charge-joined tms, merged cos theta histograms
merges made constant
reorganized bdt adders
cleanup dataframe methods
now run on separate input files
some factorization
cleanup
added cut-based selection
removed tests for dataframes
added lepton veto cuts, tree error handling
train 2k trees
input scripts more general
added tchpt trees
added mva name
trained new general BDT
use correct path, julia-readline
notice about OOM
write dataframe using names, values