gguf mergekit merge arxiv:2203.05482 base_model:jeiku/Everything_v3_128_StableLM base_model:merge:jeiku/Everything_v3_128_StableLM base_model:jeiku/Theory_of_Mind_128_StableLM base_model:merge:jeiku/Theory_of_Mind_128_StableLM endpoints_compatible region:us conversational