Increment version number: v0.3.

Also update mpy files for recent changes.

Author: glenn20

mip/ota/mpy/package.json

@@ -7,5 +7,5 @@
     ],
     "deps": [
     ],
-    "version": "0.2"
-}
+    "version": "0.3"
+}

mip/ota/mpy/rollback.mpy

@@ -7,5 +7,5 @@
     ],
     "deps": [
     ],
-    "version": "0.2"
-}
+    "version": "0.3"
+}