\null implemented

\null works and tests have been added
\tuple implementation

type only implemented and tests added
\f field separator implemented

Implemented field separator and wrote tests
\a alignment implemented

implemented and tests added
no excess whitespace in output

Now excess whitespace that was showing up in the final column has been
removed and tests have been updated to reflect this
cleaning/fixing

fixed\cleaning, all works now
cleaning

cleaning
Cleaning up

cleaned up code as recommended
fixed up whitespace in expected file

fixed expected output with extra whitespace
merge JerettS: Formatting features

Merge pull request #70 from JerettS/sql-layer-client-tools/FormattingFeatures
https://github.com/FoundationDB/sql-layer-client-tools/pull/70