Wordlist feature: Consider user "new" until something is posted

[PMunch]

Hi, I'm setting up Mjolnir and the wordlist protection seems to only support a time-based system for considering users as "new". New users will get banned automatically for posting certain terms (and presumably their message deleted), but unless we want to ban old users who happen to say a "bad" word the bot has to know who to trust. The problem is that we see bots joining many days before posting something that will get them banned. They just sit there in the room, waiting silently, then out of nowhere start spamming the channel. What I'd like is to have a user be considered as "new" until they post something. Better yet make the minutesBeforeTrusting mean "minutes after first message before trusting".

This would hopefully help a great deal in getting bots banned.