I have a Google spreadsheet file containing just one sheet with one column. Everytime it is changed, it should be saved as a simple text (*.txt) file on my Google drive. So I would use the "on edit" trigger to run the script.
I found a few scripts that supposedly once did exactly what I need, but they seem to use outdated references, like this one which was posted two years ago. So my question is, how to export a sheet to text file now, in 2016?