transformers gguf mistral text-generation mergekit merge en arxiv:2203.05482 base_model:mistralai/Mistral-7B-Instruct-v0.1 base_model:quantized:mistralai/Mistral-7B-Instruct-v0.1 doi:10.57967/hf/1900 license:mit autotrain_compatible endpoints_compatible region:us