Merge pull request #1833 from LLK/revert-1832-revert-1829-greenkeeper/scratch-paint-0.2.0-prerelease.20180420154430

Bring in the latest bitmap editor from scratch-paint

package.json

@@ -91,7 +91,7 @@
     "scratch-audio": "0.1.0-prerelease.1516198804",
     "scratch-blocks": "0.1.0-prerelease.1524163302",
     "scratch-l10n": "2.0.20180108132626",
-    "scratch-paint": "0.2.0-prerelease.20180410152401",
+    "scratch-paint": "0.2.0-prerelease.20180420154430",
     "scratch-render": "0.1.0-prerelease.1523453612",
     "scratch-storage": "0.4.0",
     "scratch-vm": "0.1.0-prerelease.1524254811",