Add a "blame" or "history" feature that shows when a section of state got changed

[markerikson]

Just had a brainstorm-style idea and wanted to record it.

It would be really useful if there was some way to see what actions caused a given piece of state to change, or possibly have a git blame-style way to see what the last action was that updated a given piece of state.

I could see issues trying to do this in a nested way, but even just providing it for the top-level slices would be interesting.

Alternately, specify a string keypath like state.some.field, and show a list of actions that updated that path and what changes occurred.