wanderlust/wanderlust — pull request #77 by egh (2014-11-03 02:14:03+00:00)
Title: Use elmo-list-diff instead of elmo-list-difference

@jeck pointed out that `elmo-list-difference` is quite slow. I have removed the only use of this function in the codebase, which does substantially speed up when searching an IMAP folder using the `first` field.