cleanup branch alias and explicitly require legacy message-factory

Author: dbu

.gitignore

@@ -1,4 +1,4 @@
-/.php_cs.cache
+/.php-cs-fixer.cache
 /composer.lock
 /phpunit.xml
 /vendor/

composer.json

@@ -19,7 +19,8 @@
     "require-dev": {
         "phpunit/phpunit": "^8.0|^9.3",
         "php-http/client-integration-tests": "^3.0",
-        "phpspec/prophecy-phpunit": "^2.0"
+        "phpspec/prophecy-phpunit": "^2.0",
+        "php-http/message-factory": "^1.1"
     },
     "provide": {
         "php-http/client-implementation": "1.0",
@@ -36,11 +37,6 @@
             "Http\\Adapter\\Guzzle7\\Tests\\": "tests/"
         }
     },
-    "extra": {
-        "branch-alias": {
-            "dev-master": "1.x-dev"
-        }
-    },
     "scripts": {
         "test": "@php vendor/bin/phpunit"
     }