v0.5 question 1 pre-alpha v0.6 question 2 alpha v0.8 question 3 and 4 alpha v1.0 question 5 and 6 alpha v1.1 question 7 alpha v1.2 question 8 beta v1.4 question 9 and 10 beta v1.7 question 11, question 12 and question 13 beta v2.0 question 14, question 15 and question 16 beta v2.4 question 17, question 18, question 19 and question 20 complete version
