Report full sprite info in targetsUpdate

We need more than just the name for the initial render, so send everything consistent with sprite info reports.

src/engine/runtime.js

@@ -729,15 +729,7 @@ Runtime.prototype.visualReport = function (blockId, value) {
 Runtime.prototype.spriteInfoReport = function (target) {
     if (!target.isOriginal) return;
 
-    this.emit(Runtime.SPRITE_INFO_REPORT, {
-        id: target.id,
-        x: target.x,
-        y: target.y,
-        direction: target.direction,
-        costume: target.getCurrentCostume(),
-        visible: target.visible,
-        rotationStyle: target.rotationStyle
-    });
+    this.emit(Runtime.SPRITE_INFO_REPORT, target.toJSON());
 };
 
 /**

src/index.js

@@ -304,7 +304,7 @@ VirtualMachine.prototype.emitTargetsUpdate = function () {
             // Don't report clones.
             return !target.hasOwnProperty('isOriginal') || target.isOriginal;
         }).map(function (target) {
-            return [target.id, target.getName()];
+            return target.toJSON();
         }),
         // Currently editing target id.
         editingTarget: this.editingTarget ? this.editingTarget.id : null

src/sprites/rendered-target.js

@@ -379,6 +379,14 @@ RenderedTarget.prototype.getCurrentCostume = function () {
     return this.sprite.costumes[this.currentCostume];
 };
 
+/**
+ * Get full costume list
+ * @return {object[]} list of costumes
+ */
+RenderedTarget.prototype.getCostumes = function () {
+    return this.sprite.costumes;
+};
+
 /**
  * Update all drawable properties for this rendered target.
  * Use when a batch has changed, e.g., when the drawable is first created.
@@ -654,6 +662,25 @@ RenderedTarget.prototype.postSpriteInfo = function (data) {
     }
 };
 
+/**
+ * Serialize sprite info, used when emitting events about the sprite
+ * @returns {object} sprite data as a simple object
+ */
+RenderedTarget.prototype.toJSON = function () {
+    return {
+        id: this.id,
+        name: this.getName(),
+        isStage: this.isStage,
+        x: this.x,
+        y: this.y,
+        direction: this.direction,
+        costume: this.getCurrentCostume(),
+        costumeCount: this.getCostumes().length,
+        visible: this.visible,
+        rotationStyle: this.rotationStyle
+    };
+};
+
 /**
  * Dispose, destroying any run-time properties.
  */