v0.5.0

[0.5.0] - 2025-08-29

🚀 Generative pipeline in hugot!

• The new TextGenerationPipeline allows you to run generative models such as Gemma and Phi in golang. Kudos to Riley Oh for getting this one
  over the line!
• Currently only implemented for the ORT backend. Implementations for XLA and GO backend coming soon!
• See the documentation for how to get started

🚀 New pipelines: cross encoder and image classification

• The CrossEncoderPipeline implements the equivalent of sentence transformers' Cross Encoder. Kudos to
  Fábio Correia for providing the initial implementation
• The ImageClassificationPipeline implements the equivalent of Hugging Face's Image Classification pipeline

✨ Training improvements

• The training session to fine-tune embeddings now accept TrainEval and Eval datasets to compute in-sample and test statistics
• The training session now implements early stopping based on the loss on the Eval dataset. Early stopping is evaluated at the end of each training epoch.
• The training session now accepts a layer freezing configuration to specify which layers of the transformer will be frozen during fine-tuning

📝 Tokenization

• The go tokenizer now supports unigram tokenization

Changed

• Updated go to 1.25.0
• Upgraded GoMLX to 0.22.1