Meteor 1.12 beta is out (TypeScript 4 + 23 items)

[filipenevola]

1.12-beta.2 is out!

Including 23 items

Highlight to TypeScript 4.

We are also testing a new format of Release notes, feedbacks are welcome: https://github.com/meteor/meteor/blob/release-1.12/History.md#v112-unreleased

PR: https://github.com/meteor/meteor/pull/11230

Please provide your feedback in the PR.

[rijk]

Like the new changelog format!