apparently this is needed against Rcpp 0.11.1
was trying to assign a single symbol into a list. no good.
turn back on tests against Rcpp-devel
added test for closes #309
oops
stricter is<GroupedDataFrame>, asserts that the vars attribute is present. closes #308
correctly handle NA in factors when joining. closes #306
Update check notes
Bump version and tweak news
Bump version
New glimpse function
Add top-level sample
adapt to the ListOf class in Rcpp > 0.11.1
Merge branch 'master' of https://github.com/hadley/dplyr
make rbind_all stricter (only accepting lists of data frames). closes #288
MonetDB source: fixed nrows() issue
Merge branch 'master' of https://github.com/hadley/dplyr