...

app/proguard-rules.pro

@@ -18,4 +18,24 @@
 
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
-#-renamesourcefileattribute SourceFile
+#-renamesourcefileattribute SourceFile
+
+-dontwarn
+-ignorewarnings
+
+-optimizationpasses 10
+-dontusemixedcaseclassnames
+
+-dontoptimize
+-verbose
+-overloadaggressively
+-repackageclasses i
+-allowaccessmodification
+
+-adaptclassstrings
+-adaptresourcefilenames
+-adaptresourcefilecontents
+
+# -optimizations !code/simplification/arithmetic,!code/simplification/cast,!field/*,!class/merging/*
+-renamesourcefileattribute P
+-keepattributes SourceFile,LineNumberTable