updated def files.
remove_numbered_files(): made filename to number conversion unsigned (fixes undeleted IMAP caches with UIDs larger than INT_MAX).
added option to set only mail address of recipients when replying.
src/setup.c: check whether the specified location includes settings folder.
ignore case when checking mailing list post.
removed debug prints, updated def file and updated Windows ico file. Made 3.0.0beta2 release.
merged plugin-test branch into trunk.