b/3157682 Makes the allday area expandable

If there are too many allday events they become impossible to
read. This makes it so that in this case we will instead hide
the excess events with information about how many are hidden
and an easy way to expand the allday area to show all the
allday events. Also fixes b/3472230

Change-Id: I5a73cc20f1edde54d90fc76fb7ac5ebd1260b073
diff --git a/proguard.flags b/proguard.flags
index 3e68c9f..38d4d7a 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -4,3 +4,9 @@
 -keepclassmembers class com.android.calendar.AllInOneActivity {
   *** setControlsOffset(...);
 }
+-keepclassmembers class com.android.calendar.DayView {
+  *** setAnimateDayHeight(...);
+  *** setAnimateDayEventHeight(...);
+  *** setMoreAllDayEventsTextAlpha(...);
+  *** setExpandDayHeightIconRotation(...);
+}