chore: update ci

.gitignore

@@ -27,3 +27,4 @@ build/Release
 node_modules
 
 dist
+package-lock.json

.travis.yml

@@ -3,14 +3,9 @@ language: node_js
 
 matrix:
   include:
-  - node_js: 4
+  - node_js: 8
-    env: CXX=g++-4.8
+  - node_js: 10
-  - node_js: 6
-    env:
-      - SAUCE=true
-      - CXX=g++-4.8
   - node_js: stable
-    env: CXX=g++-4.8
 
 # Make sure we have new NPM.
 before_install:
@@ -18,18 +13,3 @@ before_install:
 
 script:
   - npm run lint
-
-before_script:
-  - export DISPLAY=:99.0
-  - sh -e /etc/init.d/xvfb start
-
-after_success:
-  - npm run coverage-publish
-
-addons:
-  firefox: 'latest'
-  apt:
-    sources:
-      - ubuntu-toolchain-r-test
-    packages:
-      - g++-4.8

circle.yml

@@ -1,15 +0,0 @@
-machine:
-  node:
-    version: stable
-
-test:
-  override:
-    - npm run lint
-dependencies:
-  pre:
-    - google-chrome --version
-    - wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
-    - sudo sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
-    - sudo apt-get update
-    - sudo apt-get --only-upgrade install google-chrome-stable
-    - google-chrome --version