v4.26

This release adds the following quality checks:

• Added GitHub automatic code quality analysis.
  Thanks to xet7.

and updates the following dependencies:

• bl.
  Thanks to developers of dependencies.
• Delete markdown demo that is not in use.
  Thanks to xet7.
• Update markdown and xss
  Thanks to developers of dependencies.

and fixes the following bugs:

• Disable list formatting and converting to HTML. This fixes markdown numbering and viewing bugs.
  Thanks to xet7.

Thanks to above GitHub users for their contributions and translators for their translations.