added 33966 to database

[josephmisiti]

This PR adds 33966 to the zipcode database (it was missing and bumps the version number to 0.5.

I simply executed the following command:

INSERT into Zipcodes (zip, city, state, longitude, latitude, timezone, dst) VALUES ("33966","FORT MYERS","FL", 81.8716, 26.63, -5, 1);