added more debugger code and boolean debug switches to turn on and turn off debugging.  Fixes for screen package.  Ended with an error in the errors package.
Fixed debugging error in screen noticed in error test run.
Fixes to error stack tracing.  Removed deprecated code that allowed non-JSON objects to be passed in to the error.raise() method.
Adding JSON-config.js to provide utilities for validating and interacting with configuration files.  This currently only has a pattern based validation system.