Ver 2.10    Jun 01, 05
    -bug- StandardizedRowSet: check if stddev is zero //released as 2.10
            test data: const columns in data, c:\cygwin\data\DM-extract\extract.bbr 
    -bug- DisplayModel: fixed bug with duplicate beta values; don't use map! //released as 2.10?
            scope: display of beta's in the log
            test data: c:\cygwin\data\keerthi\adult1train.txt  
Ver 2.04
    -- new options: high accuracy mode (--accurate); iter. limit (--iter)
    -- accurate summation, OneCoordStep(), to support high accuracy mode (ZO.cpp)
Ver 2.02     
    -- error bar rule for hyperparameter cv (option --errbar)
    -- probability threshold option (--probthres)
    -- reporting ROC area for training, ZO.cpp
    -- fixed bug with reporting #feats left in model: dropped intercept was causing problem
Ver 2.0
    -- Individual priors public release

