Bump version 0.4.0.0

Maple.App/Package.appxmanifest

@@ -8,7 +8,7 @@
   <Identity
     Name="56263bdbai.Maple"
     Publisher="CN=E18F459A-56CA-490C-9E8B-6892A762C635"
-    Version="0.3.0.0" />
+    Version="0.4.0.0" />
   <mp:PhoneIdentity PhoneProductId="b18d4afd-fd70-4477-8391-d605077b7858" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
   <Properties>
     <DisplayName>Maple</DisplayName>