First, thank you for your work on this great project!
Second, I am writing to let you know about a book project I am starting. Years ago I wrote Physical Modeling in MATLAB, which we used for an introductory engineering class at Olin College.
This summer, I started working with Craig Scratchley at Simon Fraser University. We are updating the book and one of the changes we are planning is explicit support for Octave as well as MATLAB. In particular, I have started making Jupyter notebooks with the code from the book and some explanatory text.