travis-ci.org is being super slow, so switch to github actions instead

Author: mkopinsky

.github/workflows/ci.yml

@@ -0,0 +1,40 @@
+name: CI
+
+on: push
+
+jobs:
+  all:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      matrix:
+        operating-system:
+          - ubuntu-latest
+          # - windows-latest # Disabled - apparently checkouts have \r\n which breaks phpcs
+          - macos-latest
+        php-versions:
+          - '7.1'
+          - '7.2'
+          - '7.3'
+          - '7.4'
+    name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php-versions }}
+        extensions: mbstring, intl
+        ini-values: post_max_size=256M, short_open_tag=On
+        coverage: xdebug
+        tools: php-cs-fixer, phpunit:7
+
+    - name: Composer Install
+      run: composer install --no-progress
+
+    - name: Code style checks
+      run: ./vendor/bin/phpcs .
+
+    - name: Unit tests
+      run: ./vendor/bin/phpunit

.travis.yml

@@ -5,6 +5,7 @@
     </rule>
 
     <arg name="ignore" value="vendor/"/>
+    <arg name="ignore" value="build/"/>
 </ruleset>