Re-enable swipe.

Swipes all checked items at once
Tap highlight
Properly colored background
Doesnt swipe non checked items when there are checked items
Change-Id: Id71e331d35f75ee02813dee8376d764386221868
diff --git a/proguard.flags b/proguard.flags
index c3f7930..8a0a1d0 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -43,4 +43,9 @@
   *** setListLeft(...);
   *** setListAlpha(...);
   *** setConversationLeft(...);
+}
+
+-keepclasseswithmembers class com.android.mail.browse.ConversationItemView {
+  *** setAnimatedHeight(...);
+  *** setItemAlpha(...);
 }
\ No newline at end of file