Add the Reversible class. Make the Host reversing oh so much more complicated (and fun) with Reversible. Add a Network.DNS.RBL.Tests module that only exports tests. Get the test suite working again.
Rename DnsblSite to Site.
Rename everything under the Network.DNS.RBL hierarchy. Add a dummy Network.DNS.RBL module.
Implement DnsblSite parsing and add a test suite for it.
More import/export cleanup.
Move the IPv4 pattern stuff into its own module and begin a real test suite.