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[BUG] Wrong response in redis-cli after unsubscribing channels and use another command to get data.

9

**Describe the bug** I was using `redis-cli` to communicate with `redis-server`. First I used `UNSUBSCRIBE` command to unsubscribe multiple channels (I did not use `SUBSCRIBE` command to subscribe those channels)....

How to use fcl.OcTree in python-fcl.

11

Hey everyone! I am wondering is it possible to create an octree from point cloud using ```fcl.OcTree```, then do the collision detection using ```fcl.OcTree```. Issue #7 mentioned the similar question,...

能够支持在生产消息的时候写入Message Header，消费的时候获取生产时写入的Message Header