arules 1.5-2

New Features from arules 1.5-2

• apriori: maxtime = 0 disables the time limit.
• is.subset/is.superset uses now fast and memory efficient C code
  for sparse computation (contributed by Ian Johnson).
  sparse = TRUE is now the default. Note that the result is now a
  sparse matrix.

New Features from arules 1.5-1

• Added interest measure maxConf.
• is.significant now supports in addition to Fisher's exact test,
  the chi-squared test.
• interest measures Fisher's exact test and chi-squared
  (using significance = TRUE) can now produce p-values for
  substitutes (with complements = FALSE).
• Added function DATAFRAME for more control over coercion to data.frame
  (e.g., use separate columns for LHS and RHS of rules).