chore(package): update scratch-paint to version 0.2.0-prerelease.20180626202149

Closes #2483

package.json

@@ -95,7 +95,7 @@
     "scratch-audio": "0.1.0-prerelease.20180621210133",
     "scratch-blocks": "0.1.0-prerelease.1530023760",
     "scratch-l10n": "3.0.20180621153937",
-    "scratch-paint": "0.2.0-prerelease.20180621213404",
+    "scratch-paint": "0.2.0-prerelease.20180626202149",
     "scratch-render": "0.1.0-prerelease.20180618173030",
     "scratch-storage": "0.5.1",
     "scratch-svg-renderer": "0.2.0-prerelease.20180618172917",