Added a simple user group permission that gives the ability to set which user groups the message should be shown to, the defaults are 1,2 which is 'Registered' and 'Unregistered / Unconfirmed'. Simply enter usergroup ID's separated by a comma.
Also updated the 'Start Delay' setting to enable a 0 value to be used.
To Upgrade
You need to re-upload the files from the upload folder and then upgrade the addon with the new XML file.