release notes | UserGuide: 4.2, 5.0, 5.1, 5.2, 6.0, 6.1, 6.2, 7.0, 7.1, 7.2 (unreleased), 8.0, 8.1, 7.2 (unreleased) | Book: 4.2, 5.0, 5.1, 5.2, 6.0, 6.1, 6.2, 7.0, 7.1, 7.2 (unreleased), 8.0, 8.1, 7.2 (unreleased) | Wiki | Q&A