android-Ultra-Pull-To-Refresh

Fix some memory leaks.

1. Dispatch event to children all the time(cancel event will be sent when the position has been updated). #101 #93
2. Fix NullPointException in sendCancelEvent. #104 #92
3. Add demo for scrollview. #90
4. Add isRefreshing() #102

Thank you @hth especially for this release.

1. Remove CLog and other usless code, make this library esaier to use. #66
2. Enable next PTR at once. #72

And the version is 1.0.9 in Maven Central.

1. Rental Style
2. PtrIndicator / PtrTensionIndicator
3. setPinContent

Release 1.0.7