Additions:

• Added many enum wrappers
• Added wrappers for BlockData, MultiBlockChange, PlayerInfoData, and BlockPosition
• Added basic metadata API for packets
• Added ability to convert to and from the BungeeCord Chat API

Improvements:

• Made non-existent field messages more descriptive
• Restored compatibility with Java 6 and Java 8
• Restored compatibility with all versions of CraftBukkit, Spigot, and MCPC/Cauldron, including 1.2.5, 1.6.4, 1.7.10 (and the protocol hack), and 1.8.7.
• Updated metrics to revision 7

Bug Fixes:

• Fixed outgoing chat messages appearing empty
• Fixed a few ClassNotFoundExceptions with inner classes (like AttributeSnapshot)
• Fixed protocol numbers
• Fixed uncaught exception console spam
• Fixed a bunch of minor errors and typos

Download: https://www.spigotmc.org/resources/protocollib.1997/download?version=33748
Issue Tracker: https://github.com/dmulloy2/ProtocolLib/issues

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