A prebuilt Notepadqq package (experimental codemirror version) is available at https://sourceforge.net/projects/notepadqq/files/
I’ve just pushed a new branch on GitHub: https://github.com/notepadqq/notepadqq/tree/codemirror. It’s an experimental notepadqq build based on CodeMirror instead of QScintilla. CodeMirror is an highly active project, and it could be a good thing to use something like that as our engine.
If we’ll be able to maintain high code performance and a seamless integration of CodeMirror with the C++ part, it isn’t excluded that CodeMirror could become the primary engine of notepadqq. Almost nothing should change from a user perspective, except a whole bunch of new features.