Require PHP 7.3 (#79)

* Fix readme

* Bump minimum PHP version to 7.3

Author: ruudk

.travis.yml

@@ -9,7 +9,6 @@ cache:
 matrix:
   fast_finish: true
   include:
-    - php: 7.2
     - php: 7.3
     - php: 7.3
       env: COMPOSER_FLAGS="--prefer-lowest"

README.md

@@ -2,7 +2,7 @@
 
 [![Build Status](https://travis-ci.org/SimpleBus/SymfonyBridge.svg?branch=master)](https://travis-ci.org/SimpleBus/SymfonyBridge)
 
-By [Matthias Noback](http://php-and-symfony.matthiasnoback.nl/)
+By [Matthias Noback](http://php-and-symfony.matthiasnoback.nl/), Cliff Odijk, Ruud Kamphuis
 
 This package contains the following bundles which can be used to integrate
 [SimpleBus/MessageBus](https://github.com/SimpleBus/MessageBus) with a Symfony application:

composer.json

@@ -26,7 +26,7 @@
         }
     ],
     "require": {
-        "php": "^7.1",
+        "php": "^7.3",
         "simple-bus/message-bus": "~3.0",
         "symfony/config": "~3.3 || ~4.0",
         "symfony/dependency-injection": "~3.3 || ~4.0",