* Make MathJax version 3 work
* Change my contributor link
* Add an optional featured image and table of contents
* Add an optional featured image and table of contents
* Add example of a featured image in post along with table of contents
* Remove word count criteria
* Fix formatting
* Add table of contents options
* Remove toc feature due to markdown bug
* Removing markup configuration
Co-authored-by: Luiz F. A. de Prá <luizdepra@users.noreply.github.com>
