I want wx.lib.pubsub's stateful publisher API to support removing listeners from topics after they have been…

I want wx.lib.pubsub's stateful publisher API to support removing listeners from topics after they have been…: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). In a session like from wx.lib.pubsub import pub , after I subscribe two listener callables to…

The task

In a session like `from wx.lib.pubsub import pub`, after I subscribe two listener callables to `orders.created`, calling `pub.unsubscribe(first_listener, 'orders.created')` should return the pubsub Listener wrapper for that callable, remove only that listener from the topic, and make later…

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.