Bug fixes
- fix null payload when aborting connection (#503)
- use workaround for setEncoding bug in node 0.10+ (#527)
- fix undeterministic error in polling buffer processing (#529)
- use explicit require of wsEngine (#523)
- check whether 'Origin' header has invalid characters (#531)
Milestone: 3.1.1
Diff: 3.1.0...3.1.1