Changelog

This is primarily a bug-fixing and optimisation update.

*Changed the way /reload works to refresh attributes:

• No longer saves the updateFlag to the level's nbt data.
• No longer injects the updateFlag into vanilla packets.
• Instead, we only use the updateFlag in runtime - not saving it at all, anywhere.

*Fixed #80: attribute tracking is handled differently now.

*Likely fixed an incompatibility between Data Attributes and ReplayMod: we no longer mess around with world properties at all.

*May have fixed long-standing issues 24 and 10: almost all networking has been removed - now we only send/receive two custom packets in the whole mod: on game join and when /reload is executed.

*Various performance improvements.