Lab 5:
- Write a primitive that will take in a Midas Blue file (a DataFile) and convert it to a CSV file.
```
nM> primlab5 <IN> <OUT>
nM> primlab5 testxy3000.prm testxy.csv{COLUMNNAMES="ABSC|ORD"}
```
- Tips:
  - Do not try to write the entire CSV file by hand using TextFile.
  - DataFile implements the ListFile interface.
  - CsvFile implements the ListFile interface.
  - All the methods you need can be found in the ListFile interface.
- Be sure to test your primitive on many different files.
- How hard would it be to make your primitive work with any type of ListFile as either input or output?