Vert.x 3.1.0 发布，主要更新内容如下：
- Vertx-sync is a set of utilities that allow you to perform asynchronous operations and receive events in a synchronous way, but without blocking kernel threads.
- Vertx-stomp is an implementation of a STOMP server and client. You can use the STOMP server with other clients and use the STOMP client with other servers. The server and the client supports the version 1.0, 1.1 and 1.2 of the STOMP protocol. The STOMP server can also be used as a bridge with the vert.x event bus.
- Vertx-shell is a command line interface for the Vert.x runtime available from regular terminals using different protocols.
- Re-implementation of the Starter class and related functionality. And now redeploy is back!