Change key access from symbol to string.

I'm guessing that because the data_bags' items are stored as JSON the
symbol lookup of members isn't working correctly.  I'm commiting this so
that I can test in a prepared environment (if we decide to rebase we
can).

Also, I've added info and debug messages that will help point at
the problems with this in the future.
Increment patch level for this small fix.

Updating the version number so it's not forgotten on this branch.

Issues: #12