It's time to update SubAPI again; and it'll will break every plugin currently using it. You can always follow the Beta Updates if you want to be more prepared for these kinds of things though.

Documentation
JavaDoc [Server] [Proxy]

ChangeLog:
• Use Bukkit EventHandlers for SubEvents
• .getInstance() instead of static SubAPI methods
• .getInternals() for NMS like coding
• Adds SubEditEvent
• Fixed this bug
• Now uses @Overrides for Proxy methods
• Minor Fixes/Changes