Fix for loading errors.
Remove logging messages, better background process tracking.
Better error trapping.
Off by one error.  Excel starts at 1 arrays start at 0.
Better error reporting, better load flow.
Removed the detele batch option.
Changed from PHPExcel to some code by Sergey Schuchkin.
Added background columns back into logic.
Quoting the column names.
Quoting the column names.
Quoting the column names.
for real this time.
Force types
Nohup version
removed nohup
Fixing a small bug
Blank cell set to null when target is int or bigint.
Int big int blanks now treated as nulls.
fixing suff.  switching version.
Working