could you please merge my two accounts on math.stackexchange into one?
My first account is authorised via google: https://math.stackexchange.com/users/18855/aleksey-pichugin
My second account is authorised via openid: https://math.stackexchange.com/users/18757/aleksey-pichugin
I would like to use the google login in the future, so could you please, if at all possible, merge the second account into the first (18757 into 18855).