v3.0.0

3.0.0 (2026-08-11)

⚠ BREAKING CHANGES

• header values in headers[].value keep the whitespace that folding introduced instead of having every whitespace run collapsed to a single space, single value headers such as subject and from resolve to the first occurrence of a duplicated header rather than the last, and to, cc, bcc and replyTo are returned in document order rather than reversed.

Bug Fixes

• resolve non-WHATWG charset labels instead of falling back to windows-1252 (6378618), closes #94
• unfold headers per RFC 5322 and resolve duplicated headers first-wins (7b0ca9d)