Possible new functionality - edit and delete

On hover, a pencil and X icon would appear to allow you to edit and delete values.

Click the pencil to modify the value. _Question: strings are easy, but how should I handle undefined, null, regex, boolean, array, and obj values?_

Click the X to delete the value.

I'm undecided on whether this is something anyone would use or just feature bloat. I'll leave the issue open. Please feel free to comment!

No files, tests, or entry points are named. Start by locating the code that renders values and handles hover interactions, then review how strings and the listed undefined, null, regex, boolean, array, and object values are represented. Done would require an agreed scope and behavior for editing and deleting values.

Written by the indexing model from the issue text.