Created project
Added KEN_ALL.csv and .keepme
Modified pom.xml for resources
Created ZipCodeDatabase interface
Added README.md
Changed ZipCodeDatabase interface and added exceptions.
Changed ZipCodeDatabase interface, and added ZipCode model.
Changed ZipCodeDatabase interface
Changed package structure
Added JapaneseZipCodeDatabase class
Added skeleton methods and test case
Added supercsv dependency
Added commons-lang dependency
Added JapaneseUtil
Changed int field to Integer in ZipCodeModel
Chagned inner class to static
Fix miss of changing field type (int to Integer)
Implemented JapaneseZipCodeUtil for old zip code
Added constructors to InvalidZipCodeFormatException
Implemented JapaneseZipCodeUtil for new(current) zip code