Validity of EXCLUDE tests

[stephenberry]

The excluded tests should probably be flipped and included.

fail01_EXCLUDE.json -> This should actually pass. The latest JSON specification does not require only objects or arrays.
From the standard: JSON-text = ws value ws, where a value could be a string

fail18_EXCLUDE.json -> This should also pass as there are no depth limits, though limits are necessary for some DOM implementations to avoid stack overflows. I can understand the need to exclude this test for certain use cases.

[Loki-Astari]

Will have a look.