Ability to add blocked subcommands on spigot servers. If you want bungee/waterfall subcommand blocker PRs are welcome.
Default messages for config data in case something goes wrong
For blocking subcommands properly the base command needs to be whitelisted. You need to provide full command string for the subcommand, so for example to block /help about you need to add help about in config.
You might want to regenerate the config to see new sections.