Cut a January 2019 Release

[fffej]

Resolves #211

• Are you happy for the content of this change to be publicly visible?
• Are all new or updated entries marked as isNew = true? (not applicable as cutting a release)
• Does radar.csv render correctly when viewed on Github?
• Does the updated tech radar display as you expect?

[fffej]

I've created a short link (http://bit.ly/RedgateJan2019) as something memorable.

I was planning to do a blog post on the Info site, mentioning the link, create a PDF and tag it in releases.

Anything else I might have forgotten?

[garethbragg]

Seems reasonable to me 👍 I can't immediately think of anything missing.

For future releases I imagine we'll keep stuff marked as isNew until after cutting the release, so the especially interesting parts are more obvious to viewers. For v1 it's entirely academic.