Note of changes.

2008/03/11 - start to construct the first version 0.1-1
2008/03/14 - add nomogram.crr to correct lp  and set
             verion number to 0.1-2
           - add function zzz.R
2008/03/17 - capitalize package name as QHScrnomo
2008/03/20 - set version to 0.1-3
           - add flag 'ci' to 'nomogram.crr'
2008/02/21 - add function 'pred.crr','pred.ci' and 'groupci'
2008/04/02 - add a check to 'crr.fit' if bfitj are very large(infinite),
             stop giving a error message to check if there is a predictor
             with large integers( i.e, year of surgery)
2008/04/02 - add 'tenf.crr'
2008/08/04 - modify function 'pred.ci' to accomodate when failcode == 1
2008/10/16 - edit crr.fit and tenf.crr to deal with subset options in cph
2008/12/31 - fixed a bug in crr.fit
2009/06/03 - fixed a bug in sas.crr
2011/03/01 - add cindex, summary.crr and anova.crr
2011/04/13 - add Newlabels.cmprsk and Newlevels.cmprsk
2011/04/18 - fix a bug in tenf.crr
2011/04/19 - change the random sampling scheme in tenf.crr
             so that the number of patients in each fold
             is more balanced
05/23/2011 - fix a bug in predict.cmprsk