Changes to squid-4.0.22 (07 Dec 2017):
- Regression fix: Relay peer CONNECT error status line and headers to clients
- Bug 4767: SMP breaks IPv6 SNMP and cache manager queries
- Bug 4718: support filling raw buffer space of shared SBufs
- Bug 4648: object revalidation for HTTPS scheme
- Bug 4616: store_client.cc:92: "mem" assertion
- Bug 2821: ignore Content-Range in non-206 responses
- HTCP: Ignore packets with invalid URI
- TLS: Validate the shortest certificate chain
- TLS: Add checks for OpenSSL 1.1.0f API changes
- TLS: Fix reporting of validation errors for downloaded intermediate certs
- TLS: Fix SSL certificate cache refresh and collision handling
- Fix backwards compatibility for Squid-3.5 external_acl_type formats
- Fix invalid mime icon URLs in cache
- Do not die silently when dying early
- Docs: update translation files