lang: Add a terminator for ending bytecode

lang: Allow functions with 0 variables

lang: Fix C formatting

lang: Implement Self variable

lang: Write IR to C code

lang: Use files for compiling

lang: Dynamically add calls based on functions

lang: Replace func with dynamically compiled module ...

I did some tweaking to the style of the generated bytecode but otherwise
this is basically merging func.c in to compile.py. Seems to work for now.

lang: Explain compile.py structure

lang: Add depth checks to compiler calls

lang: Add depth check bytecode

lang: Switch to callee cleanup of non-return arguments ...

This simplifies calling things and will allow proper tail calls.

lang: Fix Return register being wrong

lang: Check for undefined variables

lang: Compile to bytecode and run

lang: Handle compiler register allocation

lang: Add compiler IR

lang: Finish very simple parser

lang: Add the beginnings of a bootstrap compiler