Starting from this version gmid doesn't depend on lex anymore, but

yacc is still needed.


* initial fastcgi support!  (it's still young!)
* added user-defined macros, either via `-Dname=val` or directly in
  the configuration file.
* new `include` keyword to load additional configuration files.
* new `env` rule to define environment vars for CGI scripts.
* new `alias` rule to define hostname aliases for a server.
* allow `root` to be specified per-location block.
* pidfile support with the new `-P` cli flag.
* define `TLS_VERSION`, `TLS_CIPHER` and `TLS_CIPHER_STRENGTH` for CGI
  scripts.


* remove limits on the number of virtual hosts and location blocks
  that can be defined.
* print the datetime when logging to stderr.
* use `text/x-patch` for `.patch` and `.diff` files.
* sort the auto index alphabetically.
* various improvements to the log management.
* drop the dependency on lex.
* added `--help` as synonym of `-h` and `-V`/`--version` to print the
  version.
* c-like handling of strings in the configuration file: when two or
  more strings are next to each-others, are automatically joined into
  a single string.  This is particularly useful with `$`-macros.


* correctly handle CGI scripts that replies with the maxium header
  length allowed.
* fixed the `static` target.
* fixed recursive mkdirs for configless mode (i.e. create
  `~/.local/share/gmid`)
* logs sent to syslog now have proper priority (before every message
  ended up as LOG_CRIT).  Found by Anna "CyberTailor", thanks!
* ensure `%p` (path) is always absolute in `block return` rules.
* fix automatic certificate generation, it caused problems on some
  android devices.  Found by Gnuserland, thanks!
* document the `log` rule.
* the seccomp filter was reworked and now it's known to work properly
  on a vast range of architectures (to be more specific: all the
  architectures supported by alpine linux), see github issue #4.
  Prompted and tested by @begss, thanks!
* various improvements to the configure script, notified and fixed by
  Anna "CyberTailor", thanks!
* added a timeout to the regression tests.


* if duplicate rules are found in the configuration file, an error is
  now raised instead of silently using only the last value.
* (sort of) `gg` moved to `regress` as it's only used in the
  regression suite.
* (notice) the `mime "mime-type" "extension"` rule was deprecated and
  replaced by the new `map "mime-type" to-ext "extension"`.  The
  `mime` rule will be removed in a future version because its
  syntax is incompatible with the new string auto-concat mechanism.