Where to find a changelog for the survival package

Dear All,

since some days I try to use the versions 2.35-4 of the survival 
package instead of versions 2.31, I had installed until now. Several 
changes in print.survfit, plot.survfit and seemingly in the structure 
of ratetabels effect some of my syntax files.
Is there somewhere a documentation of these changes, besides the code itself?

Thanks in advance,
Heinz