Improve github/ci

.github/workflows/ci.yml

@@ -7,8 +7,29 @@ on:
 name: CI
 
 jobs:
-  build:
-    name: Style + Tests
+  coding-guidelines:
+    name: Coding Guidelines
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 7.4
+          coverage: none
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress --no-suggest
+
+      - name: Run friendsofphp/php-cs-fixer
+        run: ./vendor/bin/php-cs-fixer fix --diff-format=udiff --dry-run --show-progress=dots --using-cache=no --verbose
+
+  type-checker:
+    name: Type Checker
 
     runs-on: ubuntu-latest
 
@@ -33,3 +54,24 @@ jobs:
 
       - name: Run test suite
         run: composer run-script test
+
+  tests:
+    name: Tests
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 7.4
+          coverage: none
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress --no-suggest
+
+      - name: Run test suite
+        run: composer run-script test