refs https://github.com/TryGhost/Team/issues/1967
- Test is good to test if the whole flow works as expected, and works together
- We can test independent parts in separate tests that have better coverage of more edge cases
- Adds a basic helper to get an agent for the frontend (spent too much time on a better solution so I decided to keep the existing supertest agent)
refs https://github.com/TryGhost/Toolbox/issues/363
- this commit pulls all code involving the Mailgun client SDK into one
new package called `mailgun-client`
- this means we should be able to replace `mailgun-js` (deprecated) with
`mailgun.js` (the new, official one) without editing code all over the
place
- this also lays some groundwork for better testing of smaller
components
refs https://github.com/TryGhost/Toolbox/issues/354
- this commit turns the Ghost repo into a monorepo so we can bring our
internal packages back in, which makes life easier when working on
Ghost
