Prep work for rewrite of ONS CSV parser
Implemented table parsing in ONS CSV reader
Implemented metadata reader in ONS CSV code
Completed ONS CSV read code (subject to further tests)
Updated filename to signify verification file
More work on ONS CSV parse() function (problem with UTF-8 encoding/decoding?)
Updated headers and ONS CSV test
Minor filename changes
Added code to run and test read() in ONS CSV code