jevkostream.scm VS utena

I tried sketching one out in Python: https://github.com/jevko/parsejevko.py ; one in C: https://github.com/jevko/parsejevko.c ; one in Java: https://github.com/jevko/parsejevko.java ; one in Scheme: https://github.com/jevko/jevkostream.scm (that's a streaming parser stub, more fleshed out one in JS is here: https://github.com/jevko/jevkostream.js ); and there are some implementations of Jevko formats and other related things in the GitHub organization: https://github.com/jevko

Been working on specifying the Utena machine. My initial plan was to add registers and instructions to the SECD machine as I usually do, to fit everything we need to keep track of. Notably, the Self machine keeps track of both "explicit" and "implicit" self; the former used for sends which explicitly write out the receiver e.g. self blah, and the latter used for sends with no explicit receiver e.g. blah.