For integration with other plug-ins, it would be nice to add a command like /kci container open <containerName> <playerName>. (and a similar command to close containers).

For now, I should only allow this command to be used on Ender containers, see #166
Maybe, I can also allow block-stationed containers in the future.
I don't think this command will ever work on pocket containers.

This is going to be a bit more complicated than I initially expected:

• the container name can contain spaces (a minor problem)
• I would also need to specify at which location the player should open the container menu (and check if there is even a container instance at that location). This is in case it is about a placed custom container.
• I would also need to specify a different way for pocket containers: players can have more than 1 pocket container in their inventory...

I will postpone this issue.