expose separator value in base64_to_df()

[ratnanil]

This is linked to my question on limesurvey.org (which is apperantly the wrong forum to place questions on the LSRC2 API or more specifically the limer package.

My issue was that get_responses() did not seem to expect the comma (",") as a delimiter value (see the screenshot).

I found the culprit in this case: The function base64_to_df() (base64_to_df.R, see d7c0c3e) has sep = ; hardcoded, whereas in my case sep = "," would be appropriate. Would it be possible to expose the sep-value as an option?