Exploring Moodle 3.7, I added the following comment to my MDL-57305 feature request. If anyone has any ideas, I am interested in hearing them.
"Daniel (and others), I was testing Moodle 3.7 today and discovered that the code fixes that I have been applying do not translate to Moodle 3.7. Yep, I knew that this would eventually happen. The files contained within ../boost/temples is completely different. I am stuck not knowing what to do. Daniel, maybe you already know how to implement your "collapsed blocks" feature into 3.7. Maybe there is an easier way? Any thoughts will be appreciated.
Since the right-side blocks in boost serve many purposes, the ability to collapse them remains important. For example, I use the "Online Users" block, and this semester, having 145 students in one course, this block grew in size when a lot of users were in Moodle. Also, I use the Checklist add-in block, which shows all 145 students. Again, the right side grows in size."