Bump versions to 58 / v3.0.8

Author: microbit-matt-hillsdon

app/src/main/AndroidManifest.xml

@@ -15,8 +15,8 @@
 -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    android:versionCode="57"
-    android:versionName="3.0.7">
+    android:versionCode="58"
+    android:versionName="3.0.8">
 
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>