arules_1.6-0

Major Changes

• discretize: the default method is now "frequency" and categories was
  renamed breaks to be consistent with cut in R-base.

New Features

• Added interest measure "importance".
• Added method items for transactions.
• Added discretizeDF to apply discretization to all numeric
  columns in a data.frame.

Bug Fixes

• Fixed typo in inspect for tidLists (reported by Carlos Chavarria).
• Fixed bug in %in% for itemMatrix (reported by Henrique Lemos)