A major release, which introduces the following features:

• Added predefined dark and light themes
• Added support for drag gestures. So far, the drag gestures SwipeGesture and PullDownGesture are provided
• Added the tabContentBackgroundColor XML attribute and according setter methods for customizing the background color of a tab's content
• The background color of tabs is now adapted when pressed, if a ColorStateList with state android:state_pressed is set
• Added the possibility to show a certain placeholder view, when a TabSwitcher is empty
• Added the functionality to show a circular progress bar instead of an icon for individual tabs.
• Updated dependency "AndroidUtil" to version 1.18.3
• Updated AppCompat v7 support library to version 27.0.2
• Updated AppCompat annotations support library to version 27.0.2
• Added dependency "AndroidMaterialViews" with version 2.1.9