4 * Many speedups, many slowdowns.
10 * Improved beam formatting.
12 * Improved grace notes.
14 * Improved accidental handling and formatting
16 * Better spacing. Includes subtle details like optical stem spacing.
18 * More ancient notation support: mensural ligatures, porrectuses, more
21 * Bracket piano pedals.
23 * Some entry optimizations.
25 * Font completely revised and improved.