lawnchair/proguard-android-optimize.txt

-allowaccessmodification
-dontoptimize
-dontpreverify
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-verbose

-keepattributes *Annotation*
-keepattributes SourceFile,LineNumberTable

-keepclasseswithmembernames class * {
    native <methods>;
}

-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keepclassmembers class * implements android.os.Parcelable {
  public static final ** CREATOR;
}