chore: upgrade travis/now to node v10 (#834)

.travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-  - "8"
+  - "10"
 dist: trusty   # needed for chrome headless
 sudo: required # needed for various sudo operations
 addons:

package-lock.json

@@ -2061,12 +2061,14 @@
             "balanced-match": {
               "version": "1.0.0",
               "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-              "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+              "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+              "optional": true
             },
             "brace-expansion": {
               "version": "1.1.11",
               "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
               "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+              "optional": true,
               "requires": {
                 "balanced-match": "^1.0.0",
                 "concat-map": "0.0.1"
@@ -2086,7 +2088,8 @@
             "concat-map": {
               "version": "0.0.1",
               "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-              "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+              "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
+              "optional": true
             },
             "console-control-strings": {
               "version": "1.1.0",
@@ -2234,6 +2237,7 @@
               "version": "3.0.4",
               "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
               "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+              "optional": true,
               "requires": {
                 "brace-expansion": "^1.1.7"
               }

package.json

@@ -169,7 +169,7 @@
       "webpack.config.js"
     ],
     "engines": {
-      "node": "^8.0.0"
+      "node": "^10.0.0"
     }
   },
   "greenkeeper": {