merge rust-rendering-2 to master

restructuring

all planets, module attachment broke

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

remove variables from stack, maybe other things pushed too

subscript assignment parsing

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

anonymous functions

list initialization and subscripting

self-recursion works

functions act like variables

first draft of functions and calls

repo synchronization between computers

no redeclaration, also added hints to errors

break and continue work?

fizzbuzz works due to fixed bug with else if

fix error with null in file, fix error data in string token, add "but" to errors