Think about mutability in API models?

[todo]

bot/src/main/kotlin/com/kotlindiscord/bot/extensions/SyncExtension.kt

Lines 161 to 168 in 899b6a6

	usersToScrub.add( // TODO: Think about mutability in API models?
	UserModel(
	user.id, user.username, user.discriminator,
	user.avatarUrl, user.roles, false
	)
	)
	}
	}

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This issue was generated by todo based on a TODO comment in 899b6a6 when #16 was merged. cc @Kotlin-Discord.