Switched from moving the cursor forward (in Regex) to ignoring (this handles newlines properly).

Updated some of the character-in-scalar rules.

tests/scalars.yaml

@@ -21,4 +21,15 @@
   that gets chomped.
 - >2
        Here's a folded scalar
-  that starts with some indentation.
+  that starts with some indentation.
+- ::vector
+- ": - ()"
+- Up, up, and away!
+- -123
+- http://example.com/foo#bar
+# Inside flow collection:
+- [ ::vector,
+  ": - ()",
+  "Up, up and away!",
+  -123,
+  http://example.com/foo#bar ]