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renamed some predictor class methods
can run predict_peptides in parallel
added mhcnuggets predictor class
changed all class methods to use underscore convention
added sphinx documentation
added neo module for neo-epitope prediction pipeline
snap package now builds with some predictors built in
fixed netmhciipan predictor
default config file in home dir for paths
changes default cutoff method for binders to use pre-defined quantiles for cutoffs
simplified web interface
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