chore(release): 1.9.0 [skip ci]

# [1.9.0](1.8.1...1.9.0) (2021-01-15)

### Features

* **Tagging:** Allow tags to be set by client ([5f40c0f](5f40c0f))

Author: semantic-release-bot

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@ideal-postcodes/core-interface",
-  "version": "1.8.1",
+  "version": "1.9.0",
   "description": "Interface specification for javascript based API Clients to api.ideal-postcodes.co.uk",
   "author": {
     "name": "Ideal Postcodes",