[docs] Update History.md regarding the return_buffers option (#189)

socketio · Feb 7, 2017 · 38b8a2b · 38b8a2b
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@@ -19,6 +19,10 @@
   * [chore] Replace msgpack with msgpack-lite (#156)
   * [feature] Make subEvent default to `messageBuffer` (#157)
 
+The major bump is due to #156.
+
+**Important note:** thanks to #157 the `return_buffers` option for the Redis client should not be needed anymore, in fact it might even lead to errors if it is still used (related: https://github.com/socketio/socket.io-redis/issues/185)
+
 2.0.1 / 2016-12-08
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