Support a new view where you can see multiple sections at once

[dlvhdr]

I'd like to introduce a new feature to gh-dash that I call "Dashboards".
It will basically allow you to view several sections at once.

As a reminder, a section is defined by a title and a GitHub search query.

The thing I'm missing right now, is the ability to see my immediate tasks when I open gh-dash. To solve that I could create a "My PRs" + "Needs My Review" dashboard.
Also, for the gh-dash project, I would like a dashboard that will display the "Open PRs" and "Open Issues".

I've made a mock that shows how this might look like:

As for the config.yml, I was thinking of something like this:

dashboards:
  - title: Immediate Feedback
    sections:
      - title: Created
        filters: is:pr -org:wix-private author:@me
        layout:
          author:
            hidden: true
      - title: Review Requested
        filters: is:pr review-requested:@me
      - title: Commented
        filters: is:pr commenter:@me
        limit: 5

I'm really looking for feedback on the concept, design and config.yml.