* add danger to @comments_types later, after _set_public() was called
* updated tests.pod
* distdir2: copy distribution directory  (using rsync), do not symlink

  One reason is that Update.pm functionality cannot be tested
  otherwise (because of the ~eserte/src/bbbike check).
* removed special handling for Exceed X server

  This special handling was introduced before more than ten years,
  probably it's not needed anymore with newer versions of Exceed.
* option editor: visual and scaling options were removed from the gui

  These are quite obscure X11 options, and very rarely needed, so it's
  now removed from the option editor. Both options are still available
  through cmdline options.
* Perl/Tk app: removed support for PerlPlusPlugin
* clarification of @font variable
* fix in set_fonts(): force use of the Tk font object for the default font

  This is a requirement for "change font" to show immediate effects. On
  Windows this was always done, now it's also done on X11.
* Update.pm: use LWP.pm instead of Http.pm on Windows when testing
  with -public

  On Windows, LWP is usually bundled, so it's better to test it with
  this module.
* Update.pm: removed outcommented code about SiePerl (and which is
  misleading wrt compressed downloads)
* converted strecke.t to Test::More
* BBBikeXS: strecke_s_XS now works internally with doubles, not ints

  Now strecke_s_XS works like strecke_s, which always used doubles
  (unless INT_SQRT is defined). This means that strecke.t should not
  fail anymore because of unexpected differences between the PP and XS
  variants.
* strecke.t: added a test case with floats, which used to fail before
  strecke_s_XS was fixed
* strecke.t: benchmarks are done only if -bench is specified
* BBBikeMail refactoring: create_mailto_url
* new test file bbbikemail.t
* fragezeichen2org: show if exact or as-the-bird-flies distance was used

  This is done by prepending the "~" (approx) sign before the km tags.
* BBBikeMail: removed support for sending fax

  This rather obscure feature was never used in the Perl/Tk app, and
  it required a private perl library Fax::Send, which itself required
  additional OS support (e.g. mgetty+sendfax).
* BBBikeMail: disabled mail sending on Windows

  It turned out that my favorite method (building a mailto: URL with
  to, cc, subject, and body included) works only for small contents
  (total number of bytes somewhere at 2000 bytes on Windows). This is
  too less to be usable.

  capabilities is now setting $can_send_mail = 0 on Windows.

  On Unix systems it's still enabled, as the maximum here is somewhere
  at 32K.
* Current route window: no Mail button if capabilities are not met

  Especially this means that currently there's no Mail button on
  Windows anymore.