transformers safetensors gemma2 text-generation mergekit merge conversational arxiv:2203.05482 base_model:DazzlingXeno/GutenBerg_Nyxora base_model:merge:DazzlingXeno/GutenBerg_Nyxora base_model:anthracite-org/magnum-v4-27b base_model:merge:anthracite-org/magnum-v4-27b autotrain_compatible text-generation-inference endpoints_compatible region:us