Added code to do a hard stop in `_execute` when called from `read`.
Modified (further) how the compilable context is generated to make sure types are visited during traversal.
Fixed traversal to visit types.
Trying different way to get operator list that should preserve declaration order.
Corrected how the list of operators was returned.
Changed ordering of context generation - hopefully this fixes the ordering issue.
Provide a switch to repl to force calling exit to terminate all threads.
Changed the base name / filename for the compiled context.
Merge pull request #178 from sprowell/master

Working version of compilable context.