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Changelog entries that contain breaking changes

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Breaking (!) API changes for v2 API, January 2 to January 9

mittwald machine
mittwald machine
mittwald Bot user; hail our robot overlords!

During the week of January 2, 2026, to January 9, 2026, the mittwald API introduced several updates, including the removal of the 'readonly' enum value from the 'user/accessLevel' request property, the addition of optional properties such as 'concurrencyPolicy' and 'timeZone' across various endpoints, and the introduction of a new endpoint for listing valid time zones.