Resilience to abusers of the API

For some reason there's a way to join text channels via the Discord API but not the Discord Client, so this commit
prevents the Client from crashing by checking to see if the channels are voice channels.

lib/Util/Equality.js

@@ -8,5 +8,38 @@
 	instances sometimes.
 
 	Instead, use objectThatExtendsEquality.equals()
-*/"use strict";exports.__esModule = true;var _createClass=(function(){function defineProperties(target,props){for(var i=0;i < props.length;i++) {var descriptor=props[i];descriptor.enumerable = descriptor.enumerable || false;descriptor.configurable = true;if("value" in descriptor)descriptor.writable = true;Object.defineProperty(target,descriptor.key,descriptor);}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor;};})();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}var Equality=(function(){function Equality(){_classCallCheck(this,Equality);}Equality.prototype.equals = function equals(object){return object && object[this.eqDiscriminator] === this[this.eqDiscriminator];};Equality.prototype.equalsStrict = function equalsStrict(object){ // override per class type
-return;};_createClass(Equality,[{key:"eqDiscriminator",get:function get(){return "id";}}]);return Equality;})();exports["default"] = Equality;module.exports = exports["default"];
+*/
+"use strict";
+
+exports.__esModule = true;
+
+var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var Equality = (function () {
+	function Equality() {
+		_classCallCheck(this, Equality);
+	}
+
+	Equality.prototype.equals = function equals(object) {
+		return object && object[this.eqDiscriminator] === this[this.eqDiscriminator];
+	};
+
+	Equality.prototype.equalsStrict = function equalsStrict(object) {
+		// override per class type
+		return;
+	};
+
+	_createClass(Equality, [{
+		key: "eqDiscriminator",
+		get: function get() {
+			return "id";
+		}
+	}]);
+
+	return Equality;
+})();
+
+exports["default"] = Equality;
+module.exports = exports["default"];