Add minified Release.

app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
+
+## Preferences reflection
+-keep class * extends androidx.preference.PreferenceFragmentCompat
+
+## EventBus Rules
+-keepattributes *Annotation*
+-keepclassmembers class * {
+    @org.greenrobot.eventbus.Subscribe <methods>;
+}
+-keep enum org.greenrobot.eventbus.ThreadMode { *; }
+# And if you use AsyncExecutor:
+-keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {
+    <init>(java.lang.Throwable);
+}