Update format tests

[warwickmm]

This updates the format tests to version 1.0.0. The tests now verify that the "votes" column contains values that represent integers. This reveals the following errors:

• 2008/20081104wvgeneralbooneprecinct.csv

  * There are 1 rows with votes that aren't integers:
  
  Headers: ['county', 'precinct', 'office', 'district', 'candidate', 'party', 'votes']:
  Row 403: ['Boone', '32', 'U.S. HOUSE', '3', 'MARTY GEARHEART', 'REPUBLICAN', '4.6']

• 2008/20081104wvgeneralmercerprecinct.csv

  * There are 1 rows with votes that aren't integers:
  
  Headers: ['county', 'precinct', 'office', 'district', 'party', 'candidate', 'votes']:
  Row 1377: ['Mercer', '64', 'Attorney General', '', 'Democratic', 'Darrell McGraw', '0.112']

• 2008/20081104wvgeneralkanawhaprecinct.csv

  * There are 1 rows with votes that aren't integers:
  
  Headers: ['county', 'precinct', 'office', 'district', 'candidate', 'party', 'votes']:
  Row 4593: ['Kanawha', '110', 'MEMBER OF HOUSE OF DELEGATES', '30', 'TODD CARDEN', 'REPUBLICAN', '11.1']

These will be fixed in a subsequent pull request.