`all` contains twice the word "about"

[X-Wei]

https://pub.dartlang.org/documentation/english_words/latest/english_words/all-constant.html

I would assume the all to be a list with no duplicates.

[filiph]

Thanks for spotting this! There were several duplicates in all. Not sure how that happened.

I've fixed this just now. Will publish a new version soon.