drop support for unmaintained Symfony versions

Author: xabbuh

CHANGELOG.md

@@ -7,7 +7,7 @@ The change log describes what is "Added", "Removed", "Changed" or "Fixed" betwee
 ### Changed
 
 - Dropped support for PHP < 7.1
-- Dropped support for Symfony 2 
+- Dropped support for Symfony versions that do not receive bugfixes
 
 ### Added
 

composer.json

@@ -35,11 +35,11 @@
         "php-http/message-factory": "^1.0.2",
         "php-http/stopwatch-plugin": "^1.2",
         "psr/http-message": "^1.0",
-        "symfony/config": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
-        "symfony/dependency-injection": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
-        "symfony/event-dispatcher": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
-        "symfony/http-kernel": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
-        "symfony/options-resolver": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1"
+        "symfony/config": "^3.4.20 || ^4.2.1",
+        "symfony/dependency-injection": "^3.4.20 || ^4.2.1",
+        "symfony/event-dispatcher": "^3.4.20 || ^4.2.1",
+        "symfony/http-kernel": "^3.4.20 || ^4.2.1",
+        "symfony/options-resolver": "^3.4.20 || ^4.2.1"
     },
     "conflict": {
         "php-http/guzzle6-adapter": "<1.1"
@@ -54,15 +54,15 @@
         "php-http/promise": "^1.0",
         "php-http/vcr-plugin": "^1.0@dev",
         "polishsymfonycommunity/symfony-mocker-container": "^1.0",
-        "symfony/browser-kit": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
-        "symfony/cache": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
-        "symfony/dom-crawler": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
-        "symfony/framework-bundle": "^3.4.0 || ^4.0",
-        "symfony/http-foundation": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
+        "symfony/browser-kit": "^3.4.20 || ^4.2.1",
+        "symfony/cache": "^3.4.20 || ^4.2.1",
+        "symfony/dom-crawler": "^3.4.20 || ^4.2.1",
+        "symfony/framework-bundle": "^3.4.0 || ^4.2",
+        "symfony/http-foundation": "^3.4.20 || ^4.2.1",
         "symfony/phpunit-bridge": "^3.4 || ^4.2",
-        "symfony/stopwatch": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
-        "symfony/twig-bundle": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
-        "symfony/web-profiler-bundle": "^3.4.20 || ^4.0.15 || ^4.1.9 || ^4.2.1",
+        "symfony/stopwatch": "^3.4.20 || ^4.2.1",
+        "symfony/twig-bundle": "^3.4.20 || ^4.2.1",
+        "symfony/web-profiler-bundle": "^3.4.20 || ^4.2.1",
         "twig/twig": "^1.36 || ^2.6"
     },
     "suggest": {