Fixed crashlytics

app/proguard-rules.pro

@@ -25,8 +25,13 @@
 -keep class com.android.volley.** { *; }
 -dontwarn com.android.volley.**
 
-# Hide warnings about references to newer platforms in the library
--dontwarn android.support.v7.**
-# don't process support library
 -keep class android.support.v7.** { *; }
 -keep interface android.support.v7.** { *; }
+-dontwarn android.support.v7.**
+
+# Settings for Crashlytics
+-keepattributes *Annotation*
+-keepattributes SourceFile,LineNumberTable
+-keep public class * extends java.lang.Exception
+-keep class com.crashlytics.** { *; }
+-dontwarn com.crashlytics.**