fix typo in log4j config, but junk is still spewed to stdout
Remove existing BQSR implementation
Make quality scores into ints
Scaffolding for BQSR implementation
add Util.hashCombine
add stuff to Observation
Make ObservationTable ctor private
ObservationTable fixes/changes
Empirical error probability tweaks
Don't need to broadcast SnpTable; it's only referenced once
add Recalibrator skeleton