Android-SDK - 3.1.0
## 3.1.0 May 13th, 2019
This minor release updates the SDK to use the Optimizely Java SDK 3.1.0 which includes the following:
### New Features: * Introduced Decision notification listener to be able to record: * Variation assignments for users activated in an experiment. * Feature access for users. * Feature variable value for users. * Added APIs to be able to conveniently add Decision notification handler (`addDecisionNotificationHandler`) and Track notification handler (`addTrackNotificationHandler`).
### Bug Fixes: * Feature variable APIs return default variable value when featureEnabled property is false. ([#274](https://github.com/optimizely/java-sdk/pull/274))
### Deprecated * Activate notification listener is deprecated as of this release. Recommendation is to use the new Decision notification listener. Activate notification listener will be removed in the next major release. * `addActivateNotificationListener`, `addTrackNotificationListener` and `addNotificationListener` APIs on `NotificationCenter`.