FWIW I've created a branch-5_29 and tagged 5.29.0 on it. I've built rpms
and uploaded them and tar.gz to the SF file manager. See:
http://sourceforge.net/projects/maxima/files
If someone can create a Windows installer, that would be terrific.
Please give it a try and let us know how it turns out. I'll create
additional 5.29 releases as needed, with a public announcement once we
get to a stable version.
best
Robert Dodier