Find the most recent versions of all entries whose path matches a given pattern.

def find_re(self, pattern):
        """Find the most recent versions of all entries whose path matches a given pattern."""
        # TODO: Reduce redundancy with RAFArchive
        pattern = re.compile(pattern, re.I)
        for k, v in six.iteritems(self.entries_full):
            if pattern.search(k):
                # Most recent version will be last
                yield v[-1]