transformers tensorboard safetensors stablelm text-generation alignment-handbook trl sft generated_from_trainer conversational dataset:HuggingFaceH4/ultrachat_200k base_model:stabilityai/stablelm-2-1_6b base_model:finetune:stabilityai/stablelm-2-1_6b license:other autotrain_compatible endpoints_compatible region:us