3.1.1

Improved hook inheritance.

Added the ability to set global hooks that apply to all instances or local hooks that apply to the current instance only.

Global hook example:

var player = new YouTubeToHtml5();
var myCallback = function() { console.log('example'); };
var hookPriority = 10;
var isGlobal = true;
player.addAction('api.end', myCallback, hookPriority, isGlobal);