[R] [R-pkgs] QCA version 1.0-4 released

[Adrian Duşa]

Dear All,

QCA package version 1.0-4 has been released today, the sources are now
visible on CRAN and the binaries for Windows and MacOS should appear
in a couple of more days.

We highly recommend upgrading to this version. Apart from a number of
small bug fixes, the most notable reason to upgrade is a dramatic
increase in speed, due to the compilation of some computationally
intensive parts of the code in the C language. QCA is now faster by a
factor of at least 10 (in some cases over 100), and it consumes
considerably less memory.

We are grateful to Jim Holtman, Simon Urbanek, Duncan Murdoch, Martin
Morgan and Prof. Brian Ripley for very useful hints while optimizing
both the R code and some of its C implementation.

Best wishes,
Adrian and Alrik

-- 
Adrian Dusa
Romanian Social Data Archive
1, Schitu Magureanu Bd.
050025 Bucharest sector 5
Romania
Tel.:+40 21 3126618 \
       +40 21 3120210 / int.101
Fax: +40 21 3158391

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