Last week’s Thanksgiving festivities were a time to celebrate the abundance of the past year. Whether Yalies were in California, like Sally Cho, a New Haven hotel with compatriots from their residential college, like Victor Kang, or with Murphy Temple in Shelton, Connecticut, the meals centered around traditional dishes, though some unconventional diners reached for the tofurky. The year’s holiday season has officially begun, extra pounds and all.