Changelog for websockets-0.9.2.0

- 0.9.2.0 * Make sending and receiving messages thread-safe by default * Export `forkPingThread` * Fix Windows `withSocketsDo` issue - 0.9.1.0 * Don't use Network.ByteString.Lazy.sendAll on Windows - 0.9.0.1 * Allow compilation with older bytestring versions * Bump text dependency - 0.9.0.0 * Bump various dependencies * Remove io-streams dependency * New close mechanism * More flexible API interface - 0.8.2.6 * Bump QuickCheck dependency - 0.8.2.5 * Bump attoparsec dependency - 0.8.2.4 * Bump entropy dependency - 0.8.2.3 * Bump mtl dependency - 0.8.2.2 * Bump network dependency - 0.8.2.1 * Add benchmark with many open connections * Update example to use gender-neutral language - 0.8.2.0 * Fix possible leaking of client sockets when connection times out