use JSONProfileSimple as default JSON profile interpretation (i.e. make
it explicit that no type information is determined)
Introduce the JSONProfileTyped module and unittests.
Rename the JSONProfile to JSONProfileSimple, cleanup the pod and
explanation a bit.
add JSONProfileTyped to the load test
Fix remarks
remove unused Interpret,InterpreNode and Show methods from Fetch
fix remarks
Merge pull request #34 from stdweird/json_type

Add scalar type metadata refinement for JSON profiles