*) Feature: the "upstream" directive.

    *) Change: now the "\" escape symbol in the "\"" and "\'" pairs in the
       SSI command is always removed.

    *) Change: the ECONNABORTED error log level was changed to "error" from
       "crit".

    *) Bugfix: the ngx_http_perl_module could not be build without the
       ngx_http_ssi_filter_module.

    *) Bugfix: nginx could not be built on i386 platform, if the PIC was
       used; the bug had appeared in 0.3.27.

    *) Change: the "variables_hash_max_size" and
       "variables_hash_bucket_size" directives.

    *) Feature: the $body_bytes_sent variable can be used not only in the
       "log_format" directive.

    *) Feature: the $ssl_protocol and $ssl_cipher variables.

    *) Feature: the cache line size detection for widespread CPUs at start
       time.

    *) Feature: now the "accept_mutex" directive is supported using
       fcntl(2) on platforms different from i386, amd64, sparc64, and ppc.

    *) Feature: the "lock_file" directive and the --with-lock-path=PATH
       autoconfiguration directive.

    *) Bugfix: if the HTTPS protocol was used in the "proxy_pass" directive
       then the requests with the body was not transferred.