A small overview of sfeed changes since the last talk.                  [05/17]

On my first talk about sfeed the version was version 1.0, now it is 1.8.

Here are some highlights of the changes and developments:

* sfeed_curses has been integrated into sfeed. Compiling it can be disabled.
* sfeed_json was added. It converts to JSON in the JSON Feed format:
  https://www.jsonfeed.org/version/1.1/
* Lots of small polishing changes and iterations: documentation, typofixes,
  testing, year 2038+ and leap second support on MS-DOS,
  flawless (of course) signal handling, etc.
  Many polishing changes and iterations have been started because of questions,
  suggestions or discussions, thanks for that!
* Some work to get sfeed as a package in mainstream distros such as Debian and
  Debian-based ones (Maemo Leste, Purism, etc):
  https://repology.org/project/sfeed/versions
  https://buildd.debian.org/status/package.php?p=sfeed&suite=sid
* The RSS-bridge project added sfeed output format support:
  https://github.com/RSS-Bridge/rss-bridge/blob/master/formats/SfeedFormat.php
* sfeed_download example script, it can for example:
  * Download youtube videos in parallel using yt-dlp and xargs #amazin
   * Convert webpages to PDF, download podcasts, comics, memes in parallel

