initial (broken) version of expected.py
converted tests into a package
fixed reporting of stats in qualstats
added data/expected.py and fixed some tests to use new stats reporting
fixed reporting of stats to new style in converter.py and updated tests
fixed bugs in quality converstion functions in pyngsqc
renamed ConvertPhredOffset to ConvertQualOffset
fixed convert qual offset not writing converted reads
added test for ConvertQualOffset