gguf mistral quantized 2-bit 3-bit 4-bit 5-bit 6-bit 8-bit GGUF text-generation base_model:Vdr1/L3-8B-Sunfall-v0.5-Stheno-v3.2 base_model:quantized:Vdr1/L3-8B-Sunfall-v0.5-Stheno-v3.2 region:us imatrix conversational