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Release notes
This release addresses a feature request (http://drupal.org/node/221995) to separately enable checkbox and radio replacement. It incorporates all given bugfixes made to the 1.x series of this module, but I'm not sure those are all yet resolved, so I am not calling this an official release yet. It is the latest one though and should probably be used before any other.
One note for those upgrading to this module. Since the options have changed, you should make sure to visit the update page to ensure the module gets a chance to convert old options to the new ones. Prior to doing this, the module will be effectively disabled as soon as you place the new files in your modules directory.
As for the big jump from 1.x to 3.x, I'm sorry about that. I'm not that good with CVS and a few typos have basically made the 2.x branch line unusable anymore.