Learning Haskell from Graham Hutton's book, "Programming in Haskell" (2nd Edition).
-- [ ] Chapter 1
-- [ ] Exercise 1
-- [ ] Chapter 2
-- [ ] Exercise 2
-- [ ] Chapter 3
-- [ ] Exercise 3
-- [ ] Chapter 4
-- [ ] Exercise 4
-- [ ] Chapter 5
-- [ ] Exercise 5
-- [ ] Chapter 6
-- [ ] Exercise 6
-- [ ] Chapter 7
-- [ ] Exercise 7
-- [ ] Chapter 8
-- [ ] Exercise 8
-- [ ] Chapter 9
-- [ ] Exercise 9
-- [ ] Chapter 10
-- [ ] Exercise 10
-- [ ] Chapter 11
-- [ ] Exercise 11
-- [ ] Chapter 12
-- [ ] Exercise 12
-- [ ] Chapter 13
-- [ ] Exercise 13
-- [ ] Chapter 14
-- [ ] Exercise 14
-- [ ] Chapter 15
-- [ ] Exercise 15
-- [ ] Chapter 16
-- [ ] Exercise 16
-- [ ] Chapter 17
-- [ ] Exercise 17