Allow debugging release builds

app/proguard-rules.pro

@@ -1,3 +1,11 @@
+# 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
+
 # Kotlin
 -assumenosideeffects class kotlin.jvm.internal.Intrinsics {
 	public static void check*(...);