Leaves logic change [$10]

[mastercoms]

This issue is part of the 1.13.x compatibility Epic.

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inspired by or based upon content from Mojang or third-party projects that are based on such content (CraftBukkit, Spigot, Forge, ...).

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Description:

Leaves now survive up to a distance of 6 blocks from logs instead of 4. Data was also changed to be persistent and distance.

Reference Documentation:

https://minecraft.gamepedia.com/Leaves

Relevant Code:

https://github.com/GlowstoneMC/Glowstone/blob/1.13/src/main/java/net/glowstone/block/blocktype/BlockLeaves.java

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