Things to improve

[almarklein]

• [x] Easier way to write instructions (now you really need the wasm docs)?
• [x] Util to package a collection of functions in a wasm module, i.e. you just produce a few lists of instructions.
• [x] A way to run WASM on the desktop (e.g. via node).
• [ ] A WASM/Zoof interpreter in Python, allowing Python functions to be provided by the host env.
• [x] Notebook for demo purposes.