It’s International Left-Hander’s Day, a celebration founded by the Left-Handers Club to honor leftie style.Now in its 17th year, the day has been celebrated with right vs. left sports matches, left-handed drinking events and other activities, the club says.In honor of the day, some tidbits about sinistrality:About that nameSinistrality is the formal name for left-handedness and carries quite a history.It’s based on the Latin word