SCXML-242: Providing JSON base datamodel as replacement for XML/XPath
See: https://issues.apache.org/jira/browse/SCXML-242
- adding FasterXML Jackson as (default) json parser
- adding new ContentParser to encapsulate Data (content) parsing logic
- adding new AbstractBaseEvaluator for common new cloneData method
- replace all XML based datamodel examples with JSON and dropping all Data() and Location() usages
- dropping Data() and Location() implementations and related XPathBuiltin for Jexl, Javascript and Groovy languages
- deleting no longer relevant XPath based unit-tests
44 files changed
