WIP return keyword, read more

Functions are having issues with being copied around, especially
between buckets, leading to the scopes getting looped. The program gets
stuck in 'incrementRefCount()'.

It's past my time limit, so I'll keep working on it tomorrow with a
fresh mind.

All function stuff is still untested.

See #163

scripts/funky.toy

@@ -1,3 +1,5 @@
+/*
+
 fn name(param1: int, param2: float, param3: string, param4) {
 	print param1;
 	print param2;
@@ -7,8 +9,6 @@ fn name(param1: int, param2: float, param3: string, param4) {
 
 name(42, 3.14, "hello world", -1);
 
-//URGENT: return values are still needed
-
 fn output(arg) {
 	print arg;
 }
@@ -20,4 +20,22 @@ output(3.1415);
 output("woot!");
 output([1, 23, 3]);
 output(["key":1]);
-output(name);
+output(name);
+
+*/
+
+fn makeCounter() {
+	var counter: int = 0;
+
+	fn increment() {
+		return counter++;
+	}
+
+	return increment;
+}
+
+var tally = makeCounter();
+
+print tally();
+print tally();
+print tally();