Inspecting a large enough object will run the gem out of memory

[martinmcclure]

It's possible to run the gem out of memory inspecting a sufficiently large object.
We need to decide on a strategy for how to handle inspecting very large objects. Some of the decisions that must be made are

• How do we decide that an object is big enough to cause problems if inspected normally?
• What do we present to the user when we can't present the usual inspector?

We should make sure that even in the case of very large objects it is possible to get to all of the information in the object.