Refactor to list-based, ordered, multi-valued headers#229
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andrewtimberlake wants to merge 1 commit into
Open
Refactor to list-based, ordered, multi-valued headers#229andrewtimberlake wants to merge 1 commit into
andrewtimberlake wants to merge 1 commit into
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This is a breaking change that adds support for multiple headers of the same value.
This is expected for headers like
Received,DKIM-Signature,Authorized-Resultsand moreThis is allowed, but not expected for
To,From,Subjectetc.Because some headers are expected to only have a single entry, we now have
get_header!/2,get_to!/1etcI’ve added an Upgrade guide to outline how the changes will affect existing code.