Add CI jobs for PHP 7.3 + 7.4 (#51)

Author: eli-darkly

.circleci/config.yml

@@ -7,19 +7,27 @@ workflows:
           name: PHP 5.5
       - test-with-preinstalled-php:
           name: PHP 5.6
-          docker-image: circleci/php:5.6.34-cli-jessie
+          docker-image: circleci/php:5.6
           use-phpredis: false
       - test-with-preinstalled-php:
           name: PHP 7.0
-          docker-image: circleci/php:7.0.28-cli-jessie
+          docker-image: circleci/php:7.0
       - test-with-preinstalled-php:
           name: PHP 7.1
-          docker-image: circleci/php:7.1.15-cli-jessie
+          docker-image: circleci/php:7.1
       - test-with-preinstalled-php:
           name: PHP 7.2
-          docker-image: circleci/php:7.2.3-cli-stretch
+          docker-image: circleci/php:7.2
           include-lowest-compatible-versions-test: false 
           # lowest "compatible" version of phpunit in 7.2 has a bug - https://github.com/sebastianbergmann/comparator/pull/30
+      - test-with-preinstalled-php:
+          name: PHP 7.3
+          docker-image: circleci/php:7.3
+          include-lowest-compatible-versions-test: false 
+      - test-with-preinstalled-php:
+          name: PHP 7.4
+          docker-image: circleci/php:7.4
+          include-lowest-compatible-versions-test: false 
       - integration-test
 
 jobs:

composer.json

@@ -20,10 +20,9 @@
     },
     "require-dev": {
         "aws/aws-sdk-php": "^3.86",
-        "friendsofphp/php-cs-fixer": "~2.2.19",
+        "friendsofphp/php-cs-fixer": ">=2.2.19 <3.0",
         "guzzlehttp/guzzle": "^6.2.1",
         "kevinrob/guzzle-cache-middleware": "^1.4.1",
-        "phpdocumentor/phpdocumentor": "^2.0",
         "phpunit/phpunit": ">=4.8.26 <5.4",
         "predis/predis": "^1.0",
         "sensiolabs/consul-php-sdk": ">=2.1 <3.0",