0.4.0beta Release

ReZound 0.4.0beta is a new-feature and bug-fix release -- I am making this release simply because it has been a month since the last one. I have bumped ReZound to the beta stage now that I've received relatively few reports concerning compiling issues. See a list of the main changes at http://sourceforge.net/project/shownotes.php?release_id=109347