Bump to 0.1.8

Author: nkreeger

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@tensorflow/tfjs-node",
-  "version": "0.1.7",
+  "version": "0.1.8",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
   "gypfile": true,

src/version.ts

@@ -1,5 +1,5 @@
 /** @license See the LICENSE file. */
 
 // This code is auto-generated, do not modify this file!
-const version = '0.1.7';
+const version = '0.1.8';
 export {version};