Constant lipsum::LOREM_IPSUM

pub const LOREM_IPSUM: &'static str = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do\neiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad\nminim veniam, quis nostrud exercitation ullamco laboris nisi ut\naliquip ex ea commodo consequat. Duis aute irure dolor in\nreprehenderit in voluptate velit esse cillum dolore eu fugiat nulla\npariatur. Excepteur sint occaecat cupidatat non proident, sunt in\nculpa qui officia deserunt mollit anim id est laborum.\n"

The traditional lorem ipsum text as given in Wikipedia. Using this text alone for a Markov chain of order two doesn't work very well since each bigram (two consequtive words) is followed by just one other word. In other words, the Markov chain will always produce the same output and recreate the lorem ipsum text precisely. However, combining it with the full text in LIBER_PRIMUS works well.