rename ActivateNotification to ActivateNotificationListener same with… (

optimizely#166)

* rename ActivateNotification to ActivateNotificationListener same with TrackNotificationListener

* remove unused imports

2.0.0 beta3 bump (optimizely#162)

* add CHANGELOG.md information for 2.0.0-beta3 release

update for 1.8.1 release (optimizely#157)

Merge pull request optimizely#150 from optimizely/master

Merge master onto 2.0.x for beta2 release

Merge pull request optimizely#147 from optimizely/master

Merge Master on to 2.0.x for beta release

fix release statement

update change log for new breaking change version 1.7.0 for support o…

…f android sdk 1.4.0 breaking changes.

Configure travis-ci to ship alpha versions. (optimizely#106)

1.6.0.

Release version 1.5.0 (optimizely#75)