[1] Allow fetch() to outlive document/workers (igrigorik著, ) <https://github.com/whatwg/fetch/commit/5d745b240554f7871beed99ce443bf13968839c4>
[2] Clarify fetch settings for reporting. (#139) (jdalton著, ) <https://github.com/w3c/webappsec-csp/commit/558282b4ea040191066cae4a028dab83a886166a>
[3] Enforce limit on inflight keepalive bytes (igrigorik著, ) <https://github.com/whatwg/fetch/commit/3b4cb5495389e8854279c04ebe1d89d6b078365e>
[4] Merge pull request #39 from w3c/enforcement (toddreifsteck著, ) <https://github.com/w3c/beacon/commit/eb4126fb722288eaeed6a9def48288ed0ca3de1a>
[5] Release Notes for Safari Technology Preview 38 | WebKit () <https://webkit.org/blog/7877/release-notes-for-safari-technology-preview-38/>
[6] チェンジセット 220751 – WebKit () <https://trac.webkit.org/changeset/220751/webkit/>