- Former bookmarks implementation is now labeled as "legacy".
- XEP-0402 is now used for bookmarks when relevant namespaces are found, and it fallbacks
to legacy XEP-0048/XEP-0049 bookmarks otherwise.
- CLI legacy bookmark commands have been moved to `bookmarks legacy`
- CLI bookmarks commands now use the new XEP-0402 (with fallback to legacy one
automatically used if necessary).
commands have been added to add `to`, `cc` and `bcc` metadata for sending copy of the
message to several entities. Metadata such as `reply-to` `reply-room` and `no-reply` are
also supported.
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