Removed ':' from the TODO keyword.
Revert "Removed ':' from the TODO keyword."

This reverts commit fc44d0bf577b3498cc63c0ead98d678ec4cc4dc9.
Removed newline.
Changed the zip column to TEXT. Close #55

Changed zip to TEXT (string) because some countries use strings in the zipcode. Also in the USA sometimes the following format is used: 'xxxxx-xxxx'.