Ticket data from different timezone are not aligned (bug introduced with #1085)

[DE0CH]

I am trying to find correlations between tickets in differnet timezone (one in the New York Stock exchange and the other in the London Stock Exchange). Due to changes to the timezone logic, the data in each row of yfinance.download are no longer the data of the Tickets at the same time. Using ignore_tz=False fixes this problem. This problem didn't exist with version 0.1.77 and previous. So I think by default ignore_tz should be set to False as that behaviour is consistent with the previous minor versions.