I f you’re Julieta Venegas — the beloved, accordion-playing folk-pop dreamer who blazed a distinct musical trail in Latin indie-rock with open-hearted elegies that have sold millions and millions of records since the early 2000s — laying out your complex life story might seem like a daunting task. Yet for a long time now, the Mexican singer-songwriter had been kicking around ideas for a project that would let her reflect on her decades-long career and upbringing, linking together chapters like