* hash-bang lines in grosciteco.tes and tedoc.tes are fixed up
  at build time instead of install-time (via install-exec-hook).
* This will hopefully resolve problems with the FreeBSD port,
  since Poudriere installs the package as non-root but with BINMODE=555.
  The alternative would have been to set BINMODE=755 in the port which may not
  be acceptible by the official port committer.
  Anyway, I decided to go out of the way of any conflicts.
  See also https://bugs.freebsd.org/bugzilla/show_bug.cgi?format=multiple&id=283601
* On the downside, this will break install-path overrides at install-time
  (e.g. `make install bindir=...`).

* The unnamed buffer is also used for reading from --stdin, so you couldn't practically combine
  --stdin with passing command-line arguments to macros.
* The old approach of passing command-line arguments via lines in the
  unnamed buffer was flawed anyway as it wouldn't work with filenames containing LF.
  This is just a very ancient feature, written when there weren't even long Q-reg names in SciTECO.
* You can now e.g. pipe into SciTECO and edit what was read interactively, e.g. `dmesg | sciteco -i`.
  You can practically use SciTECO as a pager.
* htbl.tes is now a command-line filter (uses -qio).
* grosciteco.tes reads Troff intermediate code from stdin, so we no longer need
  "*.intermediate" temporary files.
* added a getopt.tes test case to the testsuite.
* This change unfortunately breaks most macros accepting command-line arguments,
  even if they used getopt.tes.
  It also requires updating ~/.teco_ini - see fallback.teco_ini.

* ED hooks are not executed in this case
* <EF> is now allowed even when editing a Q-Reg, unless you try to close the
  current buffer

* Improves DEC TECO-11 compatibility.
* <EM> is still supported as a synonym, but considered deprecated and is no longer documented.
  A warning is printed when invoked.
  It can be repurposed at any time in the future.
* `EI$` is not yet supported.
  I am unsure whether this makes any sense.

* when hosted on Windows, the default is DOS linebreaks
* Unix linebreaks are in many cases more consistent as all other sources use Unix linebreaks
* woman pages with Unix linebreaks are slightly faster to load due to EOL conversion
* especially Groff input must not contain CR as it will otherwise log lots of warnings
  (affects htbl.tes and tedoc.tes).

 * Fixed build problems on Windows
 * g_slice on Windows has been shown to be of little use either
   and it does not work well with the GetProcessMemoryInfo()
   measurements.
   Also, it brings the same problem as on Glibc: Not even command-line
   termination returns the memory to the OS.
   Therefore, we don't use g_slice at all and commented on it.
 * The custom Linux and Windows memory measurement approaches
   have been shown to be inefficient.
   As a workaround, scripts disable memory limiting.
 * A better approach -- but it will only work on Glibc -- might
   be to hook into malloc(), realloc() and free() globally
   and use the malloc_usable_size() of a heap object for
   memory measurements. This will be relatively precise and cheap.
 * We still need the "Object" base class in order to measure
   memory usage as a fallback approach.

 * some code simplifications
 * it now supports command line arguments via getopt.tes.
 * the -C flag enabled C/C++ mode.
   By default tedoc parses SciTECO code which means it can be used
   to document macro packages as well.
 * Therefore it is installed as a separate tool now.
   It may be used as a Groff preprocessor for third-party macro
   authors to generate (wo)man pages.
 * there's a man page tedoc.tes(1)
 * The troff placeholder macro is now called ".TEDOC".
 * Help topics can now be specified after the starting comment /*$ or !*$.
   Topics have been defined for all built-in commands.