Fix for OnPageChangeListener callbacks.
Fix for issue #5
Revert "Merge pull request #1 from BABACHAN/master"

This reverts commit a7e6cd6e7f6892928604a420cca015936c4da74c, reversing
changes made to 1d88f5fce81094f06cbc404c5c0f6e559c907249.
Merge pull request #4 from lavallc/master

Fix for issue #5 and issue #10.
Merge remote-tracking branch 'remotes/origin/pull_fix_5_10' into dev