survey 3.26

Version 3.26 of the survey package is percolating through CRAN.  Since
the last announcement on this list, of version 3.20, about 18 months
ago, the main changes are

   --  an option to calculate replicate-weight variances from sums of
squares around the point estimate rather than from the variance of the
replicates ("MSE" style)

   --  Preston's multistage rescaled bootstrap, which is valid for any
number of stages of sampling and arbitrary sampling fractions

   -- wider use of, and better asymptotic approximations for the
Rao-Scott likelihood ratio tests

   --  trimming of weights

A lot of minor bugs and infelicities have also been fixed. More
details are in the NEWS file.

    -thomas