The romantasy series “Small Town, Big Magic” concluded in September with its final book, “ Dragon Fires Everywhere .” But while the four-book journey is over, the authors behind what’s known as the “Witchlore” series have hopes the story will find a second life in an on-screen adaptation — and say they aren’t necessarily forever done with the witchy characters in the fictional St. Cyprian, Missouri. “Now that it’s done, it’s even a better pitch because you have the whole story,” Megan Crane,