train-stream does not support the Recurrent class

I tried to configure a Recurrent network to use train-stream, but ran into the following error:
```
one-brain-1 | node:internal/event_target:1037
one-brain-1 | process.nextTick(() => { throw err; });
one-brain-1 | ^
one-brain-1 |
one-brain-1 | TypeError [Error]: neuralNetwork.updateTrainingOptions is not a function
one-brain-1 | at new TrainStream (/one/node_modules/train-stream/dist/index.js:41:23)
one-brain-1 | at MessagePort. (file:///one/src/encoder.js:57:29)
one-brain-1 | at [nodejs.internal.kHybridDispatch] (node:internal/event_target:762:20)
one-brain-1 | at exports.emitMessage (node:internal/per_context/messageport:23:28)
one-brain-1 | Emitted 'error' event on Worker instance at:
one-brain-1 | at [kOnErrorMessage] (node:internal/worker:326:10)
one-brain-1 | at [kOnMessage] (node:internal/worker:337:37)
one-brain-1 | at MessagePort. (node:internal/worker:232:57)
one-brain-1 | at [nodejs.internal.kHybridDispatch] (node:internal/event_target:762:20)
one-brain-1 | at exports.emitMessage (node:internal/per_context/messageport:23:28)
one-brain-1 |
one-brain-1 | Node.js v20.3.1
```
I was unsure if this was a known issue. The docs say nothing about supporting the Recurrent class, nor do I even think the class is ready, in vanilla Brain.js? I'm not sure, but I've struggled to make one of these networks work in any environment.