We recently got our first look at the 2019 calendar for the BRSCC Mazda MX-5 Championship. As last year, it features 24 races across 8 circuits, with the season starting in March and finishing in October. But there’s been a few key changes from last year’s calendar, so let’s take a look at them. The biggest change is the addition of Pembrey to the calendar in place of Rockingham. Pembrey is a circuit I know absolutely nothing about, so that’ll…