pydle.Client.ban method doesn't understand full ban masks

If you feed the ban() method a full mask, like *!*@host, it tries to ban *!*@*!*@host - basically if it's not a known user on the channel, it prepends *!*@ - is this by design?

That's problematic yes, I'll address this. Just checking the entry for occurences of ! and @ should work, I believe.