Successsor or Fork of MarkText?

Hey folks! I've been using MarkText for years, but it seems dead now. It still works fine, but I've been on-and-off looking for something that gets dependency updates and is less resource heavy (electron).

I look for the following in order of importance:

• FLOSS license
• WYSIWYG editing, not side-by-side
• limited scope (edit docs, not trying to be 'A System for Managing Ideas')
• low resource usage
• LaTeX support is a plus

Do you know if MarkText has a trustworthy fork that is maintained? Do you know if something with similar user experience exists that uses a more lightweight code base?