Script tests re-added, all tests can run under gdb

Also fixed a minor bug with printing, and removed the ability to
configure the parser.

Added and updated QUICKSTART.md as a quick way to get people started.

There's some broken scripts under 'scripts/' that require functions to
work properly.

scripts/fib.toy

@@ -0,0 +1,16 @@
+//BUG: Not yet functional
+
+//example of the fibonacci sequence
+fn fib(n: int) {
+	if (n < 2) return n;
+	return fib(n-1) + fib(n-2);
+}
+
+//TODO: type coercion syntax hasn't been decided on yet, but it will be needed
+for (var i = 1; i <= 10; i++) {
+	print i .. ":" .. fib(i);
+}
+
+//Note to my future self: yes, the base case in 'fib()' is 'n < 2', stop second guessing yourself!
+//Note to my past self: don't tell me what to do!
+//Note to both of you: keep it down you young whipper snappers!