Upgrade the app to newer plugin versions as well as migrate to newer Android conventions. Gradle syncs and app builds.

app/build.gradle

@@ -2,19 +2,20 @@ apply plugin: 'com.android.application'
 
 android {
     namespace "com.hyperling.apps.games"
-    compileSdkVersion 36
+    compileSdkVersion 37
     defaultConfig {
         applicationId "apps.hyperling.com.platformer"
         minSdkVersion 14
-        targetSdkVersion 36
-        versionCode 12
-        versionName "0.0.11"
+        targetSdkVersion 37
+        versionCode 13
+        versionName "0.1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
         release {
             minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
 }

app/src/main/AndroidManifest.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    package="com.hyperling.apps.games">
+    xmlns:tools="http://schemas.android.com/tools">
 
     <!-- Include required permissions for Google Mobile Ads to run. -->
     <uses-permission android:name="android.permission.INTERNET" />