Changes in version 2.2.1: o NOTE: Version 2.2.0 is a regression. The package is restored in 2.2.1. o Section added to vignette explaining how to get signatures from MSigDB. Changes in version 2.0.1: o New vignette o Feature: construct SigCheckObject from existing SigCheckObject o Feature: 3-group KM o Feature: impute missing feature values o Feature: user-defined scoring function o minor bugs and man pages fixes Changes in version 2.0.0: o Major revamp. Survival analysis, S4 object, etc. Changes in version 1.0.0: o Initial release.