- Implements h2-14 protocol (http://tools.ietf.org/html/draft-ietf-httpbis-http2-14)
- Implements HPACK 09 (http://tools.ietf.org/html/draft-ietf-httpbis-header-compression-09)
- Improve efficiency in library code
- Define NOTHREADS if std::future is not available
- Strict checking of first SETTINGS
- Compatibility for older linux kernel