Return updated state in the cache notification event

[feld]

when the registered Hook is defined with a timeout value

Fixes #325

[feld]

I really wanted to write a test to validate this but I struggled to unravel what was going on in test/cachex/services/informant_test.exs. The cache4 or hook4 is the right thing to work with as it is created with a timeout value of 50, but even if I alter the hook binding to have actions: [:all] so it stops erroring when I try to Cachex.put/3 it never seems to generate any messages? Maybe I'm completely misunderstanding these tests

[whitfin]

@feld I wouldn't worry about adding a test here, it's unlikely to ever hit again (and even if it does nobody appears to care).

If you really want to, I'd just make a new test case specifically for this rather than changing the existing ones. The existing ones aren't that simple, but they cover all the basics. As this is something specific, I'd just add a new one - although again, I don't think it's necessary.

LMK either way, happy to merge this.

[feld]

If you're happy, I'm happy. I'll leave the test case alone.