Full implementation of automatic (command-line) exporting.
More output feedback.
Collect and communicate uncaught exceptions.
I believe this stage quality thing is useless (and it NPEs)
A couple more error cleanups.
Remove redundant check.
The exportDir conf property is relative to the conf's parent dir.
Wait a frame before doing actual publish.

Publishing always involves a very long frame for any sizable flump project, so let's start it on
a new frame. For one thing, it appears that the output only flushes between frames, and it looks
better from the CL script you've been told that publishing is started before the app halts for
awhile.