App target updated to SDK 28 (Android P) (#526)

Now that APIs have been finalised as of P Preview 3 (P Beta 2), app can target SDK 28 successfully.

app/build.gradle

@@ -44,13 +44,13 @@ static def getProperty(@Nullable Properties properties, String name) {
 }
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion '27.0.3'
+    compileSdkVersion 28
+    buildToolsVersion '28.0.0'
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 27
+        targetSdkVersion 28
 
-        renderscriptTargetApi 27
+        renderscriptTargetApi 28
         vectorDrawables.useSupportLibrary = true
 
         applicationId 'com.kabouzeid.gramophone'

app/src/main/AndroidManifest.xml

@@ -12,6 +12,7 @@
     <uses-permission android:name="android.permission.WRITE_SETTINGS" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="com.android.vending.BILLING" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 
     <application
         android:name=".App"