Phaser.Matrix if passed a 0 value would consider it falsy, and replace it with the default by mistake. It now checks if the arguments are undefined or null and only then sets the defaults (thanks mmcs)

Author: photonstorm

README.md

@@ -365,7 +365,7 @@ You can read all about the philosophy behind Lazer [here](http://phaser.io/news/
 
 ### Updates
 
-* TypeScript definitions fixes and updates (thanks @wingyplus @monagames @marineorganism @obamor @BaroqueEngine)
+* TypeScript definitions fixes and updates (thanks @wingyplus @monagames @marineorganism @obamor @BaroqueEngine @danzel)
 * Docs typo fixes (thanks @seanirby @johnrees)
 * The TypeScript defs ambient declaration has been updated to make it compatible with the SystemJS loader (thanks @monagames)
 * You can no longer intersect check a Body against itself (thanks @VitaZheltyakov #2514)
@@ -386,6 +386,8 @@ You can read all about the philosophy behind Lazer [here](http://phaser.io/news/
 * Group.addAt has been refactored to be a simple call to `Group.add`, removing lots of duplicate code in the process.
 * Group.create has a new optional argument `index` which controls the index within the group to insert the child to. Where 0 is the bottom of the Group. It also now makes proper use of `Group.add`, cutting down on more duplicate code.
 * Group.createMultiple now returns an Array containing references to all of the children that the method created.
+* Cache.getJSON will now return an Array if the `key` you provided points to an array instead of an Object (thanks @drhayes #2552 #2551)
+* Phaser.Matrix if passed a 0 value would consider it falsy, and replace it with the default by mistake. It now checks if the arguments are `undefined` or `null` and only then sets the defaults (thanks mmcs)
 
 ### Bug Fixes
 

src/geom/Matrix.js

@@ -25,12 +25,12 @@
 */
 Phaser.Matrix = function (a, b, c, d, tx, ty) {
 
-    a = a || 1;
-    b = b || 0;
-    c = c || 0;
-    d = d || 1;
-    tx = tx || 0;
-    ty = ty || 0;
+    if (a === undefined || a === null) { a = 1; }
+    if (b === undefined || b === null) { b = 0; }
+    if (c === undefined || c === null) { c = 0; }
+    if (d === undefined || d === null) { d = 1; }
+    if (tx === undefined || tx === null) { tx = 0; }
+    if (ty === undefined || ty === null) { ty = 0; }
 
     /**
     * @property {number} a