Hopper: the Minimal Runtime (for 6502 and Z80)

Defining a minimal version of the Hopper Runtime for faster development and testing to get up and running on 6502 and Z80 again by: specifying a subset of the VM instructions (no 'packed' instructions) implementing most of the system APIs in Hopper excluding a lot of the system library (File system, Floats, Dictionaries ..) My objective this time is size rather than speed: squeezing a very usedful version of the Hopper Runtime into less than 8K. RetroShield from 8BitForce: https://www.tindie.com/stores/8bitforce/ Hopper Repo on GitHub: https://github.com/sillycowvalley/Hopper