adding NotAuthorized Exception to query construction
adding NotAuthorizedException to import
fix
allowing preprocessors to optionally modify and return their inputs
removing returned_values for postprocess
Merge pull request #1 from jkatzer/master

removing returned_values for postprocess
taking return value for postprocessors
never log exceptions. no exceptions.
Merge pull request #2 from jkatzer/master

Post processing Return Values
reading returned result from get_single postprocessor
Merge pull request #3 from jkatzer/master

reading returned result from get_single postprocessor
Merge pull request #1 from vitalco/master

Bringing in latest dev changes