Fix unexpected kw args (version mismatch between train machine and test machine?)

Add tokenizer

Add config.json from https://huggingface.co/CMU-AIR2/deepseek_lora_hardarithmetic/commit/897694fea18d122a157c31409e5455b3adc7ccd6

Can only hold one checkpoint??

Save config for this run

180K steps (WandB run: https://wandb.ai/cmu-11785-s24-sg06/huggingface/runs/3060wpp0 at 80K steps)

initial commit