`/tmp/agkozak_zsh_prompt_*` files pile up

[lpirl]

Dear @agkozak,

thanks for this wonderful piece of FLOSS, I'm a happy long-time user.

Ever since, I see agkozak_zsh_prompt_* files piling up in /tmp. After a quick glance in the code, the files do not seem to be cleaned up. Am I overlooking something? Is there something we can do about this?

Thanks in advance

Lukas