Add swap

Current state:

There is no swap space currently.

Wanted state:

Seeing swap space (total + used) under the memory or on the same row.

Why the change is sensible:

The information presented is going to seem more full.

Cool project, thanks.

[LinusDierheimer]

You can now add swap to your structure to show it. Is that enough?

I build and checked, and it seems to be perfect to me, thank you. Also you may consider adding Swap to --structure by default. But that's up to you, I just noticed it's not there in your commit.

[LinusDierheimer]

TBH i think the default structure is already too big, and i don't want to crowd it any more.