Change access levels of compound Views to public to satisfy Lint's In…

…stantiatable requirement when building for release.

bottomsheetpickers/src/main/java/com/philliphsu/bottomsheetpickers/date/DayPickerViewAnimator.java

@@ -14,7 +14,7 @@
 /**
  * Parent of {@link PagingDayPickerView} and {@link MonthPickerView}.
  */
-final class DayPickerViewAnimator extends ViewAnimator {
+public final class DayPickerViewAnimator extends ViewAnimator {
 
     private final Animation mDayPickerInAnimation;
     private final Animation mDayPickerOutAnimation;

bottomsheetpickers/src/main/java/com/philliphsu/bottomsheetpickers/date/DayPickerViewPager.java

@@ -33,7 +33,7 @@
 /**
  * This displays a list of months in a calendar format with selectable days.
  */
-class DayPickerViewPager extends ViewPager {
+public class DayPickerViewPager extends ViewPager {
     private static final String TAG = DayPickerViewPager.class.getSimpleName();
 
     private final ArrayList<View> mMatchParentChildren = new ArrayList<>(1);

bottomsheetpickers/src/main/java/com/philliphsu/bottomsheetpickers/date/MonthPickerView.java

@@ -24,7 +24,7 @@
 /**
  * Grid view of selectable months.
  */
-final class MonthPickerView extends View {
+public final class MonthPickerView extends View {
     private static final String TAG = "MonthPickerView";
 
     private static final int NUM_COLUMNS = 3;