List lister helper

I have not tested this code yet because of how the develop branch is not yet in a usable state, but as I may be missing for a few days I thought I should get it here in case you want to give it a try.

To use:
```
LIST PARTS IN FOO.
PRINT FOO. // terse
PRINT FOO:DUMP(). // verbose
```

99! that is a lot of depth, do you think it will be very useful after even something like 10 or 5?