transformers safetensors mistral text-generation mergekit merge custom_code arxiv:2311.03099 arxiv:2306.01708 base_model:NousResearch/Yarn-Mistral-7b-128k base_model:finetune:NousResearch/Yarn-Mistral-7b-128k license:other model-index autotrain_compatible text-generation-inference endpoints_compatible region:us