Announcing the YNAB Integration

[dreeves]

### Desiderata
- [x] Have someone read a draft
- [x] Keywords/tags
- [x] Title image
- [x] Link preview excerpt
- [x] Publish
- [ ] Blog blurbs
- [x] Waggledance
- [ ] Tweet
- [ ] Tip of the day

Cognata

• https://github.com/beeminder/beeminder/issues/4817
• https://github.com/beeminder/integrations/issues/1

Verbata: new autodata integrations, budgeting, beeminding finances,

[dreeves]