Starting to document IO::Notifcation::Change spinning it off IO::Notification refs #475
Starting to document IO::Notifcation::Change spinning it off IO::Notification refs #475

For the time being, it's mostly copy/paste from the original; next commit will work with `IO::Notification`

tbrowder/doc,MasterDuke17/doc,tbrowder/doc,MasterDuke17/doc,tbrowder/doc,MasterDuke17/doc,tbrowder/doc,MasterDuke17/doc