Bump to 0.3.1 / make sure dist folder is included in release

Author: nikolai-ri

package.json

@@ -1,6 +1,6 @@
 {
   "name": "odp-sdk",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "Ocean Data Platform JavaScript SDK",
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
@@ -47,5 +47,9 @@
     "prettier": "^2.6.2",
     "ts-jest": "^27.1.4",
     "typescript": "^4.7.2"
-  }
+  },
+  "files": [
+    "dist",
+    "source"
+  ]
 }