Fix nullable types

Author: orblazer

src/curves/path/Path.js

@@ -516,7 +516,7 @@ var Path = new Class({
      * @param {number} t - [description]
      * @param {Phaser.Math.Vector2} [out] - [description]
      *
-     * @return {Phaser.Math.Vector2|null} [description]
+     * @return {?Phaser.Math.Vector2} [description]
      */
     getPoint: function (t, out)
     {

src/display/canvas/Smoothing.js

@@ -107,7 +107,7 @@ var Smoothing = function ()
      *
      * @param {CanvasRenderingContext2D|WebGLRenderingContext} context - [description]
      *
-     * @return {boolean|null} [description]
+     * @return {?boolean} [description]
      */
     var isEnabled = function (context)
     {

src/dom/ParseXML.js

@@ -14,7 +14,7 @@
  *
  * @param {string} data - The XML source stored in a string.
  *
- * @return {DOMParser|ActiveXObject|null} The parsed XML data, or `null` if the data could not be parsed.
+ * @return {?(DOMParser|ActiveXObject)} The parsed XML data, or `null` if the data could not be parsed.
  */
 var ParseXML = function (data)
 {

src/gameobjects/group/Group.js

@@ -562,7 +562,7 @@ var Group = new Class({
      * @param {string|integer} [frame] - An optional frame from the Texture this Game Object is rendering with.
      * @param {boolean} [visible] - [description]
      *
-     * @return {Phaser.GameObjects.GameObject|null} [description]
+     * @return {?Phaser.GameObjects.GameObject} [description]
      */
     getFirst: function (state, createIfNull, x, y, key, frame, visible)
     {

src/gameobjects/text/static/Text.js

@@ -779,7 +779,7 @@ var Text = new Class({
      * @method Phaser.GameObjects.Text#setWordWrapWidth
      * @since 3.0.0
      *
-     * @param {number|null} width - The maximum width of a line in pixels. Set to null to remove wrapping.
+     * @param {?number} width - The maximum width of a line in pixels. Set to null to remove wrapping.
      * @param {boolean} [useAdvancedWrap=false] - Whether or not to use the advanced wrapping
      * algorithm. If true, spaces are collapsed and whitespace is trimmed from lines. If false,
      * spaces and whitespace are left as is.

src/physics/impact/Body.js

@@ -74,7 +74,7 @@ var Body = new Class({
          * The ImpactBody, ImpactSprite or ImpactImage object that owns this Body, if any.
          *
          * @name Phaser.Physics.Impact.Body#parent
-         * @type {Phaser.Physics.Impact.ImpactBody|Phaser.Physics.Impact.ImpactImage|Phaser.Physics.Impact.ImpactSprite|null}
+         * @type {?(Phaser.Physics.Impact.ImpactBody|Phaser.Physics.Impact.ImpactImage|Phaser.Physics.Impact.ImpactSprite)}
          * @since 3.0.0
          */
         this.parent;

src/physics/impact/World.js

@@ -227,7 +227,7 @@ var World = new Class({
      * @param {integer} tileSize - The size of a tile. This is optional if loading from a Weltmeister
      * level in the cache.
      *
-     * @return {CollisionMap|null} The newly created CollisionMap, or null if the method failed to
+     * @return {?Phaser.Physics.Impact.CollisionMap} The newly created CollisionMap, or null if the method failed to
      * create the CollisionMap.
      */
     setCollisionMap: function (key, tileSize)

src/scene/SceneManager.js

@@ -260,7 +260,7 @@ var SceneManager = new Class({
      * @param {Phaser.Scene|object|function} sceneConfig - [description]
      * @param {boolean} [autoStart=false] - If `true` the Scene will be started immediately after being added.
      *
-     * @return {Phaser.Scene|null} [description]
+     * @return {?Phaser.Scene} [description]
      */
     add: function (key, sceneConfig, autoStart)
     {
@@ -747,7 +747,7 @@ var SceneManager = new Class({
      *
      * @param {string} key - [description]
      *
-     * @return {Phaser.Scene|null} [description]
+     * @return {?Phaser.Scene} [description]
      */
     getScene: function (key)
     {

src/sound/BaseSound.js

@@ -312,7 +312,7 @@ var BaseSound = new Class({
      *
      * @param {string} markerName - The name of the marker to remove.
      *
-     * @return {SoundMarker|null} Removed marker object or 'null' if there was no marker with provided name.
+     * @return {?SoundMarker} Removed marker object or 'null' if there was no marker with provided name.
      */
     removeMarker: function (markerName)
     {

src/textures/TextureManager.js

@@ -679,7 +679,7 @@ var TextureManager = new Class({
      * @param {string} key - The unique string-based key of the Texture.
      * @param {string|integer} frame - The string or index of the Frame.
      *
-     * @return {Phaser.Display.Color|null} A Color object populated with the color values of the requested pixel,
+     * @return {?Phaser.Display.Color} A Color object populated with the color values of the requested pixel,
      * or `null` if the coordinates were out of bounds.
      */
     getPixel: function (x, y, key, frame)