Modified Machine to take a State, partially implemented metamethods, refactored for adopting freelists. Fails build; in progress.

src/core.rs

@@ -0,0 +1,18 @@
+use crate::vm::{Machine, ForeignFunction, Needle, RunError};
+pub(crate) fn load<S>(machine: &mut Machine<S>) -> Result<(),RunError> {
+  machine.set_global_function("print",|machine: &mut Machine<S>, mut needle: Needle| {
+      while let Some(value) = needle.pop() {
+        print!("{} ", machine.meta_to_string(needle.dispatch, value)?.unwrap_str())
+      }
+      println!();
+      Ok(())
+    })?;
+  machine.set_global_function("debug",|_machine: &mut Machine<S>, mut needle: Needle| {
+      while let Some(value) = needle.pop() {
+        print!("{:?} ", value)
+      }
+      println!();
+      Ok(())
+    })?;
+  Ok(())
+}