Removed some superfluous whitespace in subscriptions.lisp .
Added FEDERATE/UNFEDERATE/FEDERATED-P to STRATA.TOOLBOX.
Added STRATA.TOOLBOX:UNIQUE-ADDRESS.
Email addresses should be treated case insensitive even in violation of the RFC because otherwise we open up attack vectors.
Make STRATA.MAIL-ROUTERS:SUBSCRIPTIONS use UNIQUE-ADDRESS.
Added STRATA.MAIL-ROUTERS:FILTER.