Change default logging to INFO, and add INFO messages.

DEBUG
* Provides details useful for debugging.
* May be voluminous.
* Performance isn't a concern.
* Information is not typically useful to the user.

INFO
* Provides indication of status.
* Should not impede performance.
* Information is typically useful to the user.

In general, use DEBUG for large, frequent, detailed messages and for
messages that the user probably does not need to know. Use INFO for
smaller, less frequent, less detailed messages that the user probably
should know.