Apple 7.0.0 GA Docs

[philipphofmann]

Issue

This issue is a summary of things to update once Apple 7.0.0 is released.

Description

• Enable MaxCacheItems in Basic Options
• Add migration guide
• Remove notes on 7.0.0-alpha.x or 7.0.0-beta.x

Suggested Solution

Update the docs once Apple 7.0.0 GA is released.