[R-pkgs] survey 3.20

[Thomas Lumley]

Version 3.20 of the survey package is percolating through CRAN

The major additions since the last announcement on this list (3.18, in September) are
  
    - database-backed designs can now use replicate weights
    - some multivariate statistics: principal components, factor analysis.

The NEWS file has a more detailed list of additions and changes.

       -thomas

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