v0.19.0

• Changed: DkimStatus includes "revoked", which the API already returns in
  dkim_status for a domain Mailtea revoked after abuse. Such a domain can't
  send, and saving or re-adding it keeps it revoked. Code that switches over
  DkimStatus without a default should handle the new value.
• Added: TemplateVersion.from, TemplateVersion.reply_to and
  TemplateVersion.sender_recorded. Template history now records the sender:
  an update that changes only from or reply_to records a version (or folds
  into the open one, like any edit), and templates.restoreVersion brings the
  version's From and Reply-To back. sender_recorded says what a null
  means. When it is true the version had no From or Reply-To, and restoring it
  clears them. When it is false the version was recorded before this change,
  and restoring it leaves the current From and Reply-To alone. The server
  change reaches every SDK version on deploy; this release only adds the
  fields to the type.

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Released from mailtea-app/mailtea@ff8e7ef.