*) Feature: the "uninitialized_variable_warn" directive; the logging
       level of the "uninitialized variable" message was lowered from
       "alert" to "warn".

    *) Feature: the "override_charset" directive.

    *) Change: now if the unknown variable is used in the "echo" and "if
       expr='$name'" SSI-commands, then the "unknown variable" message is
       not logged.

    *) Bugfix: the active connection counter increased on the exceeding of
       the connection limit specified by the "worker_connections"
       directive; the bug had appeared in 0.2.0.

    *) Bugfix: the limit rate might not work on some condition; the bug had
       appeared in 0.3.38.

    *) Feature: the ngx_http_dav_module.

    *) Change: the ngx_http_perl_module optimizations.
       Thanks to Sergey Skvortsov.

    *) Feature: the ngx_http_perl_module supports the $r->request_body_file
       method.

    *) Feature: the "client_body_in_file_only" directive.

    *) Workaround: now on disk overflow nginx tries to write access logs
       once a second only.
       Thanks to Anton Yuzhaninov and Maxim Dounin.

    *) Bugfix: now the "limit_rate" directive more precisely limits rate if
       rate is more than 100 Kbyte/s.
       Thanks to ForJest.

    *) Bugfix: now the IMAP/POP3 proxy escapes the "\r" and "\n" symbols in
       login and password to pass authorization server.
       Thanks to Maxim Dounin.

    *) Feature: the "limit_except" directive.

    *) Feature: the "if" directive supports the "!~", "!~*", "-f", and
       "!-f" operators.

    *) Feature: the ngx_http_perl_module supports the $r->request_body
       method.

    *) Bugfix: in the ngx_http_addition_filter_module.

    *) Feature: the ngx_http_addition_filter_module.

    *) Feature: the "proxy_pass" and "fastcgi_pass" directives may be used
       inside the "if" block.

    *) Feature: the "proxy_ignore_client_abort" and
       "fastcgi_ignore_client_abort" directives.

    *) Feature: the "$request_completion" variable.

    *) Feature: the ngx_http_perl_module supports the $r->request_method
       and $r->remote_addr.

    *) Feature: the ngx_http_ssi_module supports the "elif" command.

    *) Bugfix: the "\/" string in the expression of the "if" command of the
       ngx_http_ssi_module was treated incorrectly.

    *) Bugfix: in the regular expressions in the "if" command of the
       ngx_http_ssi_module.

    *) Bugfix: if the relative path was specified in the
       "client_body_temp_path", "proxy_temp_path", "fastcgi_temp_path", and
       "perl_modules" directives, then the directory was used relatively to
       a current path but not to a server prefix.

    *) Bugfix: the accept-filter and the TCP_DEFER_ACCEPT option were set
       for first "listen" directive only; the bug had appeared in 0.3.31.

    *) Bugfix: in the "proxy_pass" directive without the URI part in a
       subrequest.