feat: bump Node.js version dependency to at least 10.13.0 (#747)

BREAKING CHANGE: Node.js v8 is no longer supported because it will reach EOL on 2019-12-31

.appveyor.yml

@@ -4,9 +4,9 @@
 
 environment:
   matrix:
+    - nodejs_version: '13'
     - nodejs_version: '12'
     - nodejs_version: '10'
-    - nodejs_version: '8'
 
 matrix:
   fast_finish: true

.travis.yml

@@ -4,9 +4,9 @@
 
 language: node_js
 node_js:
+  - '13'
   - '12'
   - '10'
-  - '8'
 
 before_install: yarn global add greenkeeper-lockfile@1
 install: yarn install

bin/lint-staged

@@ -16,7 +16,7 @@ const pkg = require('../package.json')
 require('please-upgrade-node')(
   Object.assign({}, pkg, {
     engines: {
-      node: '>=8.12.0'
+      node: '>=10.13.0' // First LTS release of 'Dubnium'
     }
   })
 )

package.json

@@ -36,7 +36,7 @@
     "cosmiconfig": "^6.0.0",
     "debug": "^4.1.1",
     "dedent": "^0.7.0",
-    "execa": "^3.3.0",
+    "execa": "^3.4.0",
     "listr": "^0.14.3",
     "log-symbols": "^3.0.0",
     "micromatch": "^4.0.2",
@@ -45,27 +45,27 @@
     "stringify-object": "^3.3.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.7.2",
-    "@babel/plugin-proposal-object-rest-spread": "^7.6.2",
-    "@babel/preset-env": "^7.7.1",
+    "@babel/core": "^7.7.4",
+    "@babel/plugin-proposal-object-rest-spread": "^7.7.4",
+    "@babel/preset-env": "^7.7.4",
     "babel-eslint": "^10.0.3",
     "babel-jest": "^24.9.0",
     "consolemock": "^1.1.0",
-    "eslint": "^6.6.0",
+    "eslint": "^6.7.2",
     "eslint-config-okonet": "^7.0.2",
-    "eslint-config-prettier": "^6.5.0",
-    "eslint-plugin-flowtype": "^4.4.1",
+    "eslint-config-prettier": "^6.7.0",
+    "eslint-plugin-flowtype": "^4.5.2",
     "eslint-plugin-import": "^2.18.2",
     "eslint-plugin-jsx-a11y": "^6.2.3",
     "eslint-plugin-node": "^10.0.0",
     "eslint-plugin-prettier": "^3.1.1",
-    "eslint-plugin-react": "^7.16.0",
+    "eslint-plugin-react": "^7.17.0",
     "fs-extra": "^8.1.0",
-    "husky": "^3.0.9",
+    "husky": "^3.1.0",
     "jest": "^24.9.0",
     "jest-snapshot-serializer-ansi": "^1.0.0",
     "jsonlint": "^1.6.3",
-    "nanoid": "^2.1.6",
+    "nanoid": "^2.1.7",
     "prettier": "^1.19.1"
   },
   "config": {