Update changelog to add WebSocket. As it is a new spec I added it to the beginning of the changelog. I'll so the same for Servlet 3.1, EL 3.0 and JSP 2.3 when they are implemented.
Update changelog to add WebSocket. As it is a new spec I added it to the beginning of the changelog. I'll so the same for Servlet 3.1, EL 3.0 and JSP 2.3 when they are implemented.

git-svn-id: 79cef5a5a257cc9dbe40a45ac190115b4780e2d0@1457993 13f79535-47bb-0310-9956-ffa450edef68

Nickname0806/Test_Q4,apache/tomcat,apache/tomcat,Nickname0806/Test_Q4,apache/tomcat,Nickname0806/Test_Q4,apache/tomcat,Nickname0806/Test_Q4,apache/tomcat