Support beam_width > 1

[lmyybh]

Do you have plans to support beam_width > 1? I want to predict the best configuration when using beam search, but currently only beam_width = 1 is supported.

[Arsene12358]

No, not in our current roadmap, but we can certainly take a look at it in some future releases. Also feel free to submit a PR if you have your own implementation, we are very happy to review it.