Added a (recursive) ordering, so we have a canonical output that we can compare.

tests/scalars.yaml

@@ -0,0 +1,24 @@
+- normal scalar, but
+  over several lines
+- |
+  literal scalar - so we can draw ASCII:
+  
+         -   -
+        |  -   |
+         ------
+- >
+  and a folded scalar... so we
+  can just keep writing various
+  things. And if we want to keep indentation:
+  
+    we just indent a little
+    see, this stays indented
+- >-
+  Here's a folded scalar
+  that gets chomped.
+- |-
+  And here's a literal scalar
+  that gets chomped.
+- >2
+       Here's a folded scalar
+  that starts with some indentation.