Evaluate based hover

[isidorn]

• Win @alexandrudima
• OS X @joaomoreno
• Linux @aeschli

For node debugging when a user hover over a word we evaluate that word instead of traversing the variables scopes as we did previously. Due to this, user hovering over a function call can potentially mutate the program state and might be dangerous. We have not yet decided if we will ship this and are looking for feedback. Verify:

• hovering works as before and you can inspect both complex and primitive values
• be creative and by hovering try to trigger a function call which could mutate the program state

[alexdima]

I would not ship with this experiment.