Can someone optimize this further? Seems like there is significant low hanging fruit, as evidenced by this line: https://github.com/openai/tiktoken/blob/main/sr

Can someone optimize this further? Seems like there is significant low hanging fruit, as evidenced by this line: https://github.com/openai/tiktoken/blob/main/src/lib.rs#L419 https://github.com/openai/tiktoken/blob/main/src/lib.rs#L419