announce: survival5 bug fix

[Thomas Lumley]

Anyone using the penalised partial likelihood routines in survival5 should
update their version. 

A bug has been fixed in the S package: in coxph() models with penalised
likelihood and strata it was possible in some circumstances to get an
infinite loop or perhaps an incorrect answer. 

The new version (2.3) is on cran.r-project.org and will percolate through
CRAN in the next few days.

	-thomas

Thomas Lumley			Asst. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle

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