v1.4
1. The float button drag more
smoothly
2. The long click action will be more
easily to perform.
v1.3
1. You can disable or enable Back button
with notification.
2. Screen orientation change
support.
3. fix bugs.
v1.2
1. Now long click BackButton can perform
*Recents* Action
2. Bug fix
3. You can share BackButton to your
friends.