Qiscus Chat SDK (core) v1.5.0

Changelog :

• Support ExpiredToken

for example :

• if you get error when call API qiscusCore with error code 403, please call api refreshToken

 QiscusAccount account = QiscusCore.getQiscusAccount();
        QiscusApi.getInstance().refreshToken(account.getEmail(), account.getRefreshToken())
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(QiscusCore::saveRefreshToken, throwable -> {
                    QiscusErrorLogger.print(throwable);
                });