transformers safetensors walsh-causal-v1 text-generation conversational custom_code dataset:teknium/OpenHermes-2.5 dataset:Open-Orca/OpenOrca dataset:cognitivecomputations/dolphin dataset:LDJnr/Capybara dataset:abacusai/SystemChat arxiv:2203.00555 arxiv:2206.02369 license:mit autotrain_compatible region:us