Flask-Pushjack v1.0.0 has been released.
It was the first major version release that brings the API inline with pushjack v1.0.0. There were a few backwards incompatible changes as well. The biggest breaking change is that pushjack 1.0.0 eliminated the send_bulk method which is now replaced by the send method. See the release notes for v1.0.0 of pushjack for more details.