gguf quantized GGUF imatrix quantization imat static 16bit 8bit 6bit 5bit 4bit 3bit 2bit 1bit text-generation base_model:m-a-p/neo_7b_instruct_v0.1 base_model:quantized:m-a-p/neo_7b_instruct_v0.1 license:apache-2.0 region:us conversational