Release/4.4.0 (#343)
Release/4.4.0 (#343)

* version 4.4.0-beta1

* release version 4.4.0

Leanplum/Leanplum-Android-SDK,Leanplum/Leanplum-Android-SDK,Leanplum/Leanplum-Android-SDK,Leanplum/Leanplum-Android-SDK