Ignore .json files
Add random_econbiz_oclc_numbers.pl, plus output
Add interpret_editions.pl, data from experiment with 10,000 numbers
Add percentages, total occurences and error.txt
Experiment 25-28/07/2014
Refactoring; improved output
Add caching
Add basic logging
Add single example
Log lookup errors
Remove CHI, cache via perl hashes
Experiment 19-21/09/2014