Reduce the scope of proguard rule to fix the broken build.

# next row when focus is on the last item of last row when using a RecyclerView

# Keep optimized and shrunk proguard to prevent issues like this when using

# support jar.

-keep,allowoptimization,allowshrinking class android.support.** {

  *;

}

#-keep,allowoptimization,allowshrinking class android.support.** {

#  *;

#}

-keep class android.support.v7.widget.RecyclerView { *; }