Any plan to support multi-motion tracking for WBT?

[learning-github-zgy]

Hi, thank you very much for releasing such a great project — it has been extremely helpful.

I would like to ask whether there are plans to support multi-motion tracking in WBT.
Currently, WBT seems to track a single motion sequence at a time. For training a more general controller, being able to load and track multiple motions (e.g., a dataset of motions) would be very useful.

Do you have plans to extend WBT to support multi-motion tracking, or any recommended workflow for doing this on the current version?

Thanks again for the impressive work and for open-sourcing it!