Fedify 1.2.21

Released on April 8, 2025.

• Activity Vocabulary API became to accept RFC 3339 date-time strings without a timezone offset. This is not a bug fix, but improves interoperability with some implementations that do not include a timezone offset in their date-time strings including WordPress. [#226]

• Added the following default context to Undo class:

  {
    "litepub": "http://litepub.social/ns#",
    "toot": "http://joinmastodon.org/ns#",
    "EmojiReact": "litepub:EmojiReact",
    "Emoji": "toot:Emoji"
  }