Updated maintainer email.
rs_pairs() gets a new argument
match_first to control if products in the first period
match to themselves (#1).
Added a vignette.
rs_matrix() is about twice as fast now.
Making the "Y" vector with rs_matrix()
no longer gives an error with length-0 inputs and a factor with
non-empty levels.
rs_matrix() cleans up the enclosing environment of
its result.
rs_pairs() and rs_matrix() are now faster,
and less picky about their inputs for time periods.rs_pairs() has been reworked to be much faster and
more general, while rs_unpair() has been removed. These
changes are not backwards compatible.
Added French translations.
Fixed the NOTE about LazyData from CRAN.