net.minecraft.nbt.JsonToNBT -> SNBTParser

[zml2008]

This class is a parser is for Mojang's specific string representation of NBT. While the format resembles JSON, it is not even a superset of JSON (it's more limited in which string escapes it accepts, probably other things), and should therefore not be called JSON.

The format appears to mostly be referred to as SNBT by Minecraft Wiki (though the name Mojangson has been used in the past), so calling it a SNBTParser would be more accurate and help with findability.

The static method getTagFromJson in the class would also want its name changed to match the new class name.