fixed parsing of inline XML in <data>
removed <data src> part, since JSSC won't implement that
'123' is a valid JSON string, whose interpretation is a Number
'21' is a valid JSON string, whose interpretation is a Number
quoted property names to make it valid JSON
will now parse inline XML or JSON in <content> and normalize text otherwise
oops :)
event names must always be a string
added back test 428 (still doesn't pass)