Handle more exceptions
Handle more exceptions

We catch most exceptions and print awesome messages for them. However,
some bots may `start` code that will never be wrapped with our amazing
logic. Now `handle-exception` method is exported and you can use it for
*anything*, as long as some Message object is provided (e.g. one you
get in irc-connected).

perl6/whateverable,MasterDuke17/whateverable,perl6/whateverable,perl6/whateverable