Bugfix: catch ALL exceptions in notify

Very occasionally (once/twice in a month, using taffybar daily) I've observed the desktop switcher freeze, meaning that it won't update graphically, though I can still click on the buttons to switch to a different desktop. I suspect that this may be caused by some exception that is *not* of type IOException being thrown during event notification. This is an attempt to prevent this from happening by catching a more general type of exceptions (SomeException).