CTranslate2 3.20.0

New features

• Update the Transformers converter to support more model architectures:
  • MixFormerSequential (used by microsoft/phi-1_5)
• Accept batch inputs in methods generate_tokens
• Add method Generator.async_generate_tokens to return an asynchronous generator compatible with asyncio

Fixes and improvements

• Remove the epsilon value in the softmax CPU kernel for consistency with other implementations
• Optimize implementation of the Dynamic Time Wrapping (DTW) function (used for Whisper alignment)
• Avoid an unnecessary copy of the input arguments in method Whisper::align