1.7.0 (#47)

This PR bumps up the semver minor version since I forgot to do it in
this branch:

#36

package.json

@@ -1,6 +1,6 @@
 {
   "name": "import-in-the-middle",
-  "version": "1.6.0",
+  "version": "1.7.0",
   "description": "Intercept imports in Node.js",
   "main": "index.js",
   "scripts": {