That is fair! I feel like those should definitely be allowed. I am using a wordlist based on this: http://wordlist.aspell.net/12dicts-readme/ which is public domain and has about 6k 5-letter words, compared to the Wordles 12k. If anybody knows any other good royalty free wordlists I would definitely be interested. :)

https://github.com/elasticdog/yawl is fairly standard for word-games.

[edit]

Seems possible that wordle uses it given the 12k number:

    grep '^.....$' word.list|wc -l
    12036

Thank you so much aidenn0! This looks great, will integrate it in the next update.