--- other: - | Negotiation of the 'Accept-Language' header now follows the "Lookup" matching scheme described in `RFC 4647, section 3.4 `_. The "Lookup" scheme is one of the algorithms suggested in `RFC 7231, section 5.3.5 `_. (This is due to a change in an underlying library, which previously used a matching scheme that did not conform to `RFC 7231 `_.)