For the first time in six years, BookCon is back. Celebrating the book industry and its fans, BookCon returns to the Jacob K. Javits Convention Center on April 18 and 19. The two-day convention is jam-packed with panels, author signings, and a robust show floor, and Mashable will be on the ground at the event, covering every must-see moment. The event follows a big year for books. Heated Rivalry , based on Rachel Reid's bestselling series, has everyone headed to the cottage , and the movie adaptation of Andy Weir's Project Hail Mary took us to space. BookTok is one of the loudest and most influential spaces on the internet, literally reviving book sales in the modern age. Now BookCon can be an IRL space for book fans to celebrate their passion.…