attstream: return self so that we can stack pipe() calls (#2424)
attstream: return self so that we can stack pipe() calls (#2424)


haraka/Haraka,smfreegard/Haraka,smfreegard/Haraka,haraka/Haraka,haraka/Haraka,msimerson/Haraka,smfreegard/Haraka,msimerson/Haraka,haraka/Haraka,msimerson/Haraka,smfreegard/Haraka,msimerson/Haraka