From RStudio's CRAN Mirror http://cran-logs.rstudio.com/
packageLog(packages = "cholera", date = NULL, all.filters = FALSE,
ip.filter = FALSE, sequence.filter = FALSE, size.filter = FALSE,
small.filter = FALSE, memoization = TRUE, check.package = TRUE)
An R data frame.
Character. Vector of package name(s).
Character. Date. "yyyy-mm-dd". NULL uses latest available log.
Logical. Master switch for filters.
Logical.
Logical.
Logical.
Logical. TRUE filters out downloads less than 1000 bytes.
Logical. Use memoization when downloading logs.
Logical. Validate and "spell check" package.