Changes to squid-4.0.21 (02 Jul 2017):
- Bug 4730: segfault while processing internal HTTP requests
- Bug 4492: Chunk extension parser is too pedantic
- Bug 1961: Redesign urlParse() API
- TLS: recognise tls:: namespace on logformat tokens
- SSL-Bump: tproxy does not spoof spliced connections
- security_file_certgen: collapse queued requests
- Add a basic apparmour profile
- Add transaction_initiator ACL for detecting various unusual transactions
- Add ssl::server_name options to control matching logic
- Support for --long-acl-options
- Do not die silently when dying via std::terminate()
- Fix option --foreground to implement expected behavior
- Translations: update .po and .pot to latest texts
- ... and some documentation updates
- ... and many code cleanup and stability fixes
- ... and all fixes from 3.5.27