[REFERRER]: Getting started.
[REFERRER]: Moar.
[MIX]: 'Set request's referrer.' algorithm.
[REFERRER]: Using 'referrer source'.
[REFERRER]: Headers are byte sequences.
[MIX]: Future-proof the spec.
[MIX]: User agents SHOULD block all mixed content.
[MIX]: User agents MAY screw with requests for mixed content.
[MIX]: Typos.
MIX: Block private resources from public resources.
add intro section
[MIX]: Renaming origin types for clarity.
CSP: Add a non-normative description of what policy applies to what resource in what context.
CSP: Organizing the table. h/t annevk.
[REFERRER]: Adding capability URLs to intro.
SOLIDUS.
[REFERRER]: Inherit for some iframes and workers.
CSP: Drop RFC2616 in favor of RFC7230 and RFC7231.
REFERRER: Reference RFC7231.
MIX: Clarifying 'weakly TLS-protected'.