- pep8 cleanup
- Fixed bug in connection pool logging where the "connection checked out"
debug logging message would not emit if the logging were set up using
``logging.setLevel()``, rather than using the ``echo_pool`` flag.
Tests to assert this logging have been added.  This is a
regression that was introduced in 0.9.0.
fixes #3168
Merge branch 'master' into ticket_3100
- factor out determination of current version id out of
_collect_update_commands and _collect_delete_commands
Merge branch 'master' into ticket_3100
- skip these methods
- test for postfetch->sync.populate() having importance during an UPDATE
at the per-table level
- that's it, feature is finished, needs tests