Verbosity change. Added sidenote about the reduction dataset.
Whitespace refactor.
Refuse to start if socket file already exists.

We now also remove the socket file at shutdown (includes CTRL+BREAK).
Added timestamp field-type.

Added `create_timestamp` field to `invocation` record.

- We also conceded and changed items() to iteritems(), since we'll always be a Python 2.7 project.
We now group/merge values going into the reducers.

We realized that this is the convention in MR, and will probably often have to be done by hand.

- Added HTTP and EMAIL notifications.
- We'll now automatically send exception notifications to EMAIL and/or HTTP notifiers, if configured.
Logging and notify test-related changes.