Make new default backdrop included in build

src/lib/default-project/index.js

@@ -4,7 +4,7 @@ import projectJson from './project.json';
 /* eslint-disable import/no-unresolved */
 import popWav from '!arraybuffer-loader!./83a9787d4cb6f3b7632b4ddfebf74367.wav';
 import meowWav from '!arraybuffer-loader!./83c36d806dc92327b9e7049a565c6bff.wav';
-import backdrop from '!arraybuffer-loader!./739b5e2a2435f6e1ec2993791b423146.png';
+import backdrop from '!raw-loader!./cd21514d0531fdffb22204e0ec5ed84a.svg';
 import costume1 from '!raw-loader!./09dc888b0b7df19f70d81588ae73420e.svg';
 import costume2 from '!raw-loader!./3696356a03a8d938318876a593572843.svg';
 /* eslint-enable import/no-unresolved */
@@ -26,10 +26,10 @@ export default [{
     dataFormat: 'WAV',
     data: new Uint8Array(meowWav)
 }, {
-    id: '739b5e2a2435f6e1ec2993791b423146',
-    assetType: 'ImageBitmap',
-    dataFormat: 'PNG',
-    data: new Uint8Array(backdrop)
+    id: 'cd21514d0531fdffb22204e0ec5ed84a',
+    assetType: 'ImageVector',
+    dataFormat: 'SVG',
+    data: encoder.encode(backdrop)
 }, {
     id: '09dc888b0b7df19f70d81588ae73420e',
     assetType: 'ImageVector',