CSV Parser 2.2.3

• Fix n_rows() being off-by-one when the CSVReader iterator was used (reported in #173)
  • Note: This was due to a simple counting error where the iterator did not increment the row counter for the first row. All rows were still correctly read.
• Implement ability to handle arbitrary combinations of \r and \n in line endings (#223)
• Fix CSV writers incorrectly converting decimal values between 0 and -1 to positive numbers