list-unsubscribe 0.1.3

Parse RFC 2369 List-Unsubscribe and RFC 8058 List-Unsubscribe-Post headers into a typed action enum.
Documentation 
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{
  "name": "http-scheme-case-insensitive",
  "description": "Uppercase scheme HTTPS:// is recognised; url::Url normalises to lowercase.",
  "spec": {
    "source": "RFC 3986 ยง3.1",
    "url": "https://www.rfc-editor.org/rfc/rfc3986#section-3.1",
    "behavior": "Scheme matching is case-insensitive; the url crate stores the canonical lowercase form."
  },
  "input": {
    "list_unsubscribe": "<HTTPS://example.com/unsub>",
    "list_unsubscribe_post": null
  },
  "expected": {
    "kind": "HttpLink",
    "url": "https://example.com/unsub"
  }
}