Pocketmine plugin that adds the chalkboards from education edition (all 3 sizes)

The chalkboards will be added to your creative inventory in items. Slate is the smallest (1x1), poster is the second smallest (2x1), and board is the biggest(3x2).

• Includes event for modifying and cancelling chalkboard updates
• Supports owners (stored as player uuid in custom tag, as PM does not support entity unique ids (players with operator in creative have access to all chalkboards)