Feature: read/write list by address

[rerpha]

I would like to be able to use index groups and arrays in a similar way to how you can call read_list_by_name() and write_list_by_name() if possible. I think this would take a dict in the same way that those functions do?
perhaps for naming they could be called
read_list() and write_list() to match the read() and write() commands that use index group, address etc.

I'm not sure if this is possible with the underlying DLL, so feel free to close this issue if not.