update proguard rules to make release build work

app/proguard-rules.pro

@@ -15,8 +15,6 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
-# Platform calls Class.forName on types which do not exist on Android to determine platform.
--dontnote retrofit2.Platform
 # Platform used when running on Java 8 VMs. Will not be used at runtime.
 -dontwarn retrofit2.Platform$Java8
 # Retain generic type information for use by reflection by converters and adapters.
@@ -25,4 +23,14 @@
 -keepattributes Exceptions
 -dontwarn javax.annotation.**
 -dontwarn sun.misc.Unsafe
--dontwarn okio.**
+-dontwarn okio.**
+-keep class de.nicidienase.chaosflix.entities.** { *; }
+#retrofit
+-dontwarn retrofit2.**
+-keep class retrofit2.** { *; }
+-keepattributes *Annotation*,Signature, Exceptions
+
+-keepclasseswithmembers class * {
+    @retrofit2.http.* <methods>;
+}
+#endRetrofit