When historical novelist Robin Maxwell was looking for a book idea a couple of years ago, her husband asked who her new “literary lovers” would be. “ ‘Tarzan and Jane!’ just blurted out of my mouth,” she says, laughing at how forcefully the idea seized her. “It was like lava from a dormant volcano.” And so, 100 years after the Lord of the Apes first swung into the world’s pop culture window, there is “Jane: The Woman Who Loved Tarzan,” a lush, romantic take on the English lord raised by primates — told from Jane’s point of view.