Branding changes. Many general markdown changes to appease the linter.

Chris Turczynskyj committed Nov 3, 2021

Fix 3.8.1 links. Add milestone links to What's New pages.

Chris Turczynskyj committed Aug 3, 2020

Added 3.9.0 What's New page. Added 3.9.0 Upgrade Guide.

Chris Turczynskyj committed Apr 22, 2020