chore: Use GitHub Actions

.github/workflows/css.yml

@@ -0,0 +1,36 @@
+name: CSS Linting
+on:
+  push:
+    paths:
+      - "package*.json"
+      - ".stylelint*"
+      - "**/*.css"
+      - ".github/workflows/css.yml"
+      - "!common/**"
+
+  pull_request:
+    paths:
+      - "package*.json"
+      - ".stylelint*"
+      - "**/*.css"
+      - ".github/workflows/css.yml"
+      - "!common/**"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: "12"
+
+      - name: Install npm dependencies
+        run: npm ci
+
+      - name: Stylelint
+        run: npm run lint:css

.github/workflows/html.yml

@@ -0,0 +1,38 @@
+name: HTML Linting
+on:
+  push:
+    paths:
+      - "package*.json"
+      - ".vnurc"
+      - "*.html"
+      - "examples/**/*.html"
+      - ".github/workflows/html.yml"
+      - "!common/**"
+
+  pull_request:
+    paths:
+      - "package*.json"
+      - ".vnurc"
+      - "*.html"
+      - "examples/**/*.html"
+      - ".github/workflows/html.yml"
+      - "!common/**"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: "12"
+
+      - name: Install npm dependencies
+        run: npm ci
+
+      - name: HTML Validator
+        run: npm run lint:html

.github/workflows/js.yml

@@ -0,0 +1,36 @@
+name: JavaScript Linting
+on:
+  push:
+    paths:
+      - "package*.json"
+      - ".eslint*"
+      - "**/*.js"
+      - ".github/workflows/js.yml"
+      - "!common/**"
+
+  pull_request:
+    paths:
+      - "package*.json"
+      - ".eslint*"
+      - "**/*.js"
+      - ".github/workflows/js.yml"
+      - "!common/**"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: "12"
+
+      - name: Install npm dependencies
+        run: npm ci
+
+      - name: ESLint
+        run: npm run lint:es

.github/workflows/spelling.yml

@@ -0,0 +1,38 @@
+name: Spellcheck
+on:
+  push:
+    paths:
+      - "package*.json"
+      - "cspell.json"
+      - "aria-practices.html"
+      - "examples/**/*.html"
+      - ".github/workflows/spelling.yml"
+      - "!common/**"
+
+  pull_request:
+    paths:
+      - "package*.json"
+      - "cspell.json"
+      - "aria-practices.html"
+      - "examples/**/*.html"
+      - ".github/workflows/spelling.yml"
+      - "!common/**"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: "12"
+
+      - name: Install npm dependencies
+        run: npm ci
+
+      - name: cSpell
+        run: npm run lint:spelling

.travis.yml

@@ -16,20 +16,6 @@ jobs:
     - env: ALLOW_FAILURE=true
 
   include:
-    - stage: Test
-      name: CSS Linting
-      script: npm run lint:css
-    - stage: Test
-      name: JS Linting
-      script: npm run lint:es
-    - stage: Test
-      name: HTML Linting
-      script: npm run vnu-jar
-    - stage: Test
-      name: Spellcheck
-      script: npm run lint:spelling
-      env: ALLOW_FAILURE=true
-
     - stage: Test
       name: AVA Regression Tests
       addons: