R/qtl version 1.22-21

[Karl Broman]

A new version of R/qtl (1.22-21) has been released at its web site
(http://www.rqtl.org). It should be on CRAN within a couple of days.

There were quite a number of changes; see http://www.rqtl.org/STATUS.txt
for a complete list. The major changes are below.

Karl Broman
kbr...@biostat.wisc.edu

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Version 1.22, 11/28/2011:

Major changes:

Revised plot.map to deal with a pair of maps with markers in
different orders (or with some markers appearing in one map and not
the other). We still require that the two maps have the same
chromosomes and chromosome names (with chromosomes in the same
order).

Revised scantwo to allow analysis of individual chromosome pairs,
and reorganized the way that scantwo permutations are done (first
summarizing each chromosome pair and then overall); this should
eliminate the memory problems we've had with scantwo permutations.