Martijn Laan: Code for Rich Edit 2.0 & URL detection support (1.3.13); silent uninstallation (1.3.25); system image list support in drive and directory lists (1.3.25); silent installation (2.0.0); [Types], [Components] and [Tasks] sections (2.0.0); postinstall flag (2.0.0); [Code] section (4.0.0); Subcomponents and subtasks support (4.0.0); Various other 4.0.0+ features.
Alex Yackimoff: Portions of TNewCheckListBox (4.0.0).