Merge pull request #259 from rusq/filesel-fix

v2.5.0 beta fixes

cmd/slackdump/interactive.go

@@ -154,6 +154,7 @@ func questOutputFile() (string, error) {
 	return ui.FileSelector(
 		"Output file name (if empty - screen output): ",
 		"Enter the filename to save the data to. Leave empty to print the results on the screen.",
+		ui.WithDefaultFilename("-"),
 	)
 }