page cache on update/delete a post

[jeffpaul]

Description

From Derek in Slack:
Playing around and only found one issue with the page cache so far... It doesn't clear the archives when you update/delete a post. We don't have a typical install so it's not really an issue for us but we should probably fork the redis page cache plugin anyhow and clean/fix it up. Something for later.

[jeffpaul]

Per bugscrub today, we're keeping this in the 1.0.0 release as a Nice to have.

[jeffpaul]

Note that this issue was referenced in Slack.

[jeffpaul]

Per discussion in Slack, we're punting this to Future Release.

[valendesigns]

@jeffpaul Now that we can request an audit we need to invalidate the cache when the server sends the payload because the stubbed out post object becomes outdated once the audit runs. I'm moving this back into the 1.0.0 release.

[jeffpaul]

Punting this from 1.0.0 to Future Release as it was identified in WCUS Contributor Day today that #186 is the more relevant blocker for 1.0.0.