* This pushes to the gh-pages branch since we don't yet want to introduce a new
  workflow (that would have to rebuild SciTECO).
* Built as part of the nightly MacOS builds.
  The Ubuntu builds directly build Debian packages which do not contain the
  HTML manuals.
* I don't want to check in images into the master branch.
  The gh-pages branch is cleaned with every build.
  Therefore I still cross-link to Sourceforge for any additional images
  and documents.
* We could automatically build the cheat-sheet.pdf (TODO?).
  For the time being, we are still linking to Sourceforge.

* When enabled with bit 2 in the ED flags (0,4ED),
  all registers and buffers will get the raw ANSI encoding (as if 0EE had been
  called on them).
  You can still manually change the encoding, eg. by calling 65001EE afterwards.
* Also the ANSI mode sets up character representations for all bytes >= 0x80.
  This is currently done only depending on the ED flag, not when setting 0EE.
* Since setting 16,4ED for 8-bit clean editing in a macro can be tricky -
  the default unnamed buffer will still be at UTF-8 and at least a bunch
  of environment registers as well - we added the command line option
  `--8bit` (short `-8`) which configures the ED flags very early on.
  As another advantage you can mung the profile in 8-bit mode as well
  when using SciTECO as a sort of interactive hex editor.
* Disable UTF-8 checks in 8-bit clean mode (sample.teco_ini).