Fixed bug in localStorage's state persistence logic

[nelsonec87]

This PR fixes a problem where the state is never saved to localStorage.

Now, every time the state changes, the state is marked to be persisted.

This has the immediate advantage of persisting the API, version, and URL in the header between sessions.

Before:

After:

[dmsnell]

Nice catch

[markbiek]

@dmsnell Nelson is now on parental leave.

Are you OK with me merging this? Is there anything special I need to do beyond clicking the "Squash and merge" button?

[dmsnell]

I can't remember, @markbiek - setting myself a reminder to try and look into this tomorrow in case that doesn't deploy the code.

[markbiek]

I can't remember, @markbiek - setting myself a reminder to try and look into this tomorrow in case that doesn't deploy the code.

Great, thanks! I'll set a reminder to do the same.

[markbiek]

@dmsnell It doesn't seem like this deployed.

[dmsnell]

@markbiek I think the instructions in the README.md will work for you. Poke me here if you have further trouble. Sorry I should have checked on this yesterday I guess, but I didn't know the answer was right there in front of us.