Set node version requirement to 8.x to match that of node-zopfli-es

Author: Alorel

.travis.yml

@@ -3,7 +3,6 @@ sudo: false
 node_js:
   - stable
   - lts/boron
-  - lts/carbon
 
 cache:
   directories:

package.json

@@ -1,7 +1,7 @@
 {
   "name": "shrink-ray-current",
   "description": "Node.js compression middleware with brotli and zopfli support",
-  "version": "2.1.2",
+  "version": "3.0.0",
   "contributors": [
     "Arturas Molcanovas <[email protected]> (https://alorel.github.io)",
     "Douglas Christopher Wilson <[email protected]>",
@@ -48,11 +48,11 @@
     "coveralls": "^3.0.0",
     "expect": "^23.0.0",
     "mocha": "^5.0.0",
-    "nyc": "^12.0.1",
+    "nyc": "^13.1.0",
     "supertest": "^3.0.0"
   },
   "engines": {
-    "node": ">=6.0"
+    "node": ">=8.0"
   },
   "scripts": {
     "reinstall": "rm -rf node_modules package-lock.json && npm install",