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I found a bug or mistake in the site.

Please let us know about all problems you have with the site. We're working hard to improve it. Of course, we're just volunteers, so it can take some time to get things fixed. Please send a note via the contact form with errors you encounter, problems you have, etc. Please do be patient with us. This is a big project and it continues to mature over time.

Note that our open bugs are on github, and you're welcome to look through them to see if yours has been reported. If you have a free github account, you can comment on those issues or help out explaining them, or just create one there.