Iterative checkin; prior includes fix for recovery; this includes the start
of a parameter to/not to start listener thread.
Added code to test lost connection recovery in send context.
Merge remote-tracking branch 'upstream/master'
Merge pull request #63 from deverett/master

Submitting code to raise exception when connection lost (a missed case).
Merge remote-tracking branch 'upstream/master'
incremental save