Test that carriage returns are treated like whitespace.

test/ignore_carriage_returns.wren

@@ -0,0 +1,6 @@
+// Sprinkle some carriage returns to ensure they are ignored anywhere:
+IO␍.print("one"␍)
+IO.print␍("two")
+
+// Generate a compile error so we can test that the line number is correct.
++ * // expect error