'datasets.py'; don't show Format controls for Constant columns; begin on output
'datasets.py', begin implementation of Make Datasets dialog
more layout in Make Datasets dialog
'datasets.py', added radio buttons to Make Datasets dialog
added radio button events
finished output option info
'datasets.py' Make Dataset dialog layout mostly complete, output not implemented yet
'datasets.py' beginning Excel spreadsheet output, column headings
'datasets.py', Excel output now working, still many improvements to make
'datasets.py', can select number of rows to preview, or un-check preview
'datasets.py' improved Excel output formatting
'datasets.py' Excel formatting improvements
'datasets.py' output dialog; controls for file, folder, progress
'datasets.py' check when there is nothing to output
rewrote testing queries to be more straitforward
'datasets.py', save output file, implmented for Excel, next for other formats