Add Pelican to projects pledged to go Python 3-only

[justinmayer]

If you're adding a project to the Python 3 statement, please ensure you have:

• Discussed dropping Python 2 support with all maintainers
• Discussed signing the statement with all maintainers
• Added a suitable logo if the project has one
  • Approximately square logos generally fit better than banners
  • Compressed the logo to save bandwidth (run scripts/squash-images.sh on it)
• Checked the Netlify preview made from the pull request

[justinmayer]

Preview looks good, so everything should be all set here. Many thanks for all your work on this endeavor, @takluyver! 👏

[takluyver]

Thanks! This all looks good to me. I'll leave it for a day or so, though, as I see your 'unless there are any objections' post was just a couple of hours ago. If I forget about it, please ping to remind me.

It's not just me - I've been clicking the merge button a lot lately, but @Carreau and @asmeurer did more to get the initiative off the ground, and several other people have contributed significantly.

[justinmayer]

Sincere apologies to @Carreau and @asmeurer for the oversight! Your work on this project is indeed much appreciated.

I've heard nothing but enthusiastic support among fellow Pelican Dev Team members for dropping Python 2, so I think it's safe to say that this PR can be merged. Many thanks for adding Pelican to the list! 😁

[takluyver]

Thanks!