Finally have things printing to the screen

Nothing fancy yet. This commit adds a bunch of stuff (oops):

* compiling code
* VM with instructions
* remove eval.rs and just eval in the Machine struct itself
* squash most warnings now that we're using stuff here

And probably more. But that's all for now folks

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

src/syn/mod.rs

@@ -4,3 +4,4 @@ pub mod lexer;
 pub mod parser;
 pub mod span;
 pub mod token;
+pub mod words;