transformers safetensors mistral text-generation mergekit merge arxiv:2306.01708 base_model:Felladrin/TinyMistral-248M-Chat-v2 base_model:merge:Felladrin/TinyMistral-248M-Chat-v2 base_model:Locutusque/TinyMistral-248M-v2 base_model:merge:Locutusque/TinyMistral-248M-v2 autotrain_compatible text-generation-inference endpoints_compatible region:us