M Dowle, T Short, S Lianoglou, A Srinivasan with contributions from R Saporta, E Antonyan
chron, ggplot2 (>= 0.9.0), plyr, reshape, testthat (>= 0.4),
hexbin, fastmatch, nlme, xts, bit64
Fast aggregation of large data (e.g. 100GB in RAM), fast ordered joins, fast add/modify/delete of columns by group using no copies at all, list columns and a fast file reader (fread). Offers a natural and flexible syntax, for faster development.