I'm probably going to merge the dev/4.0 branch of #iocaine into main tonight, which means that the main branch will become incompatible with NSoE temporarily. In a couple of days, I will update NSoE's main branch too, and that will work with iocaine main, but not with 3.x.

NSoE has an iocaine-3.x branch, that will continue to function with 3.3. I will continue updating that branch for a while, until I put the main branch into prod, and even after that for a while.