v0.3

add GsonUtils for registerRemoveNullListSerializer
add AuthUtils for addDefaultAuthentication
ApiClient can now be initiated without providing a realm instance
add account manager component

v0.2

better activity lifecycle handling in android with apiclient-components
speedup observable
update Realm, Retrofit, OkHttp and RxJava
asynchron Realm queres

v0.1

add error handling in api observable