[Bug] Last argument doesn't consume rest of input

As mentioned in the comments of #170 , the last argument doesn't consume the rest of the input. Example:

```java
@CommandAlias("msg")
public void onDefault(CommandIssuer sender, String username, String message) {
AsyncDatabase.submit(() -> {
UUID playerUUID = PlayerManager.getUUIDForUsername(username);
if(!RedisManager.getPlayers().contains(playerUUID)){
sender.sendMessage("That player is not online.");
return;
}
});
}
```

You should find that message doesn't get set at all.