Immutant 2.1.4 发布了，Immutant 是一个 Clojure 的应用服务器，这是一个基于 JBoss AS 7 的集成平台，用于 Ring 处理、异步消息、缓存、任务调度、XA 事务、集群和守护进程等等。
改进记录如下：
[IMMUTANT-613] - Add boot-immutant to WildFly guide
[IMMUTANT-614] - Using a dev war prints out a deprecation warning for app-relative
[IMMUTANT-615] - User can't catch errors that occur when writing the ring response
[IMMUTANT-616] - Allow adding extensions to undertow's WebSocket handshake handler