Note that we're aggressive about pushing master forward along with new
versions of Swift. Therefore, we highly recommend against pointing at
master, and instead using one of the releases we've provided.
Here is the current Swift compatibility breakdown:
| Swift Version | Runes Version |
|---|---|
| 3.X | 4.X |
| 2.X | 3.X |
| 1.2 | 1.2, 2.X |
| 1.1 | < 1.2 |