Add StateOverlay to RelativeLayout (close #819)
Fix possible unable to load drawable in DrawableCompat.loadDrawable
Fix demo crash in landscape orientation
Migrate to plugin 0.2.16
Trying to restore travis builds
Fix crash in PreferenceScreen.onRestoreInstanceState()
Merge pull request #825 from vkrivenko/preferencescreen-restoreinstancestate-bug

Fix crash in PreferenceScreen.onRestoreInstanceState()