merge rust-rendering-2 to master

restructuring

move variables to a separate list, assign to array subscript works

remove variables from stack, maybe other things pushed too

fix multiple parameter functions. change panic when 0 arguments provided to running kabel

anonymous functions

list initialization and subscripting

one stack, but its somehow 2x slower

self-recursion works

functions act like variables

first draft of functions and calls

repo synchronization between computers

no redeclaration, also added hints to errors

fizzbuzz works due to fixed bug with else if

break and continue added, but they dont clean up the stack

for loop desugaring and loops in vm

get through variables test

silly error, opcodes were wrong in opcodes.rs

variables

fix issue with not ppopping to clear stack with an expression statement