Changes

Summary

1. Add NSFWLevel (#1793) (commit: 187fffc) (details)

Commit 187fffc4347d226a0fcc600f2d72fa2676b7604f by noreply Add NSFWLevel (#1793) (commit: 187fffc)
	src/main/java/net/dv8tion/jda/api/hooks/ListenerAdapter.java (diff)
	src/main/java/net/dv8tion/jda/internal/entities/EntityBuilder.java (diff)
	src/main/java/net/dv8tion/jda/internal/entities/GuildImpl.java (diff)
	src/main/java/net/dv8tion/jda/api/entities/Guild.java (diff)
	src/main/java/net/dv8tion/jda/internal/handle/GuildUpdateHandler.java (diff)
	src/main/java/net/dv8tion/jda/api/events/guild/update/GuildUpdateNSFWLevelEvent.java