This may be useful when you want your tool to also provide additional
methods. For instance, a pickaxe could provide methods to check whether
it can break the block in front.
Packets will be discarded if the sending player is not currently
interacting with the appropriate computer. This ensures players cannot
control other people's computers.
This is enforced by checking if the current container is a "computer
container", and this container holds the correct computer.
Updated the source code to the version shipped as the 1.80pr0 alpha
release. Also removed some unnecessary files from the LuaJ subfolder
which were bulking up the repository.
