support for export to excel

Excel support for word frequency lists is not a good idea. Excel has built in limits (rather narrow limits for older versions) for how many rows and columns it can deal with, and these are frequently overrun in word frequency reports. For category reports this is less likely so they remain, although there may be run time errors if you roll over them. But in any case the UTF-8 encoded CSV files that Yoshikoder generates can be imported into Excel, which will then do whatever it is that Excel does with such things.

Yoshikoder doesn't export a word frequency list, and the .csv-file that Jfreq exports is useless in Excel.