Update play-json to 2.9.1
satabin
| Files | Coverage |
|---|---|
| core/src/main/scala/diffson | 96.33% |
| playJson/shared/src/main/scala/diffson/playJson | 75.41% |
| sprayJson/src/main/scala/gnieh/diffson/sprayJson | 75.64% |
| circe/shared/src/main/scala/diffson/circe/package.scala | 85.51% |
| Project Totals (16 files) | 89.17% |