Update roadmap to state what was delivered (in past tense)

[danyork]

Update roadmap to state what was delivered (in past tense)

Hey Dan! The core-privacy team has just got the login access to this repo, and we're going to start updating it to reflect our current roadmap and scope of work.

Our V2 roadmap has now been published too; we're really excited for what we'll be doing this year.

We'd love your feedback and input; let's grab a coffee the next time our paths cross.

[danyork]

Hmm... or maybe the page should be updated to indicate that the roadmap is now here:

https://make.wordpress.org/core/roadmap/privacy/

[dejliglama]

Hey Dan, an update is underway and need some final editing before we can update pages..