Remove php 5.5, add 7.1 and 7.2, use container-iterop 1.2 as minimum,… (

#8)

Remove php 5.5, add 7.1 and 7.2, use container-iterop 1.2 as minimum, upgrade phpunit

.travis.yml

@@ -5,22 +5,20 @@ language: php
 cache:
   directories:
     - $HOME/.composer/cache
-    - vendor
 
 php:
-  - 5.5
   - 5.6
   - 7
-  - hhvm
+  - 7.1
+  - 7.2
 
 env:
   - DEPS=lowest
   - DEPS=latest
 
 before_install:
-  - composer self-update
-  - if [[ $DEPS == 'lowest' ]]; then travis_retry composer update --prefer-lowest --prefer-stable --no-interaction ; fi
-  - travis_retry composer install --no-interaction
+  - if [[ $DEPS == 'lowest' ]]; then travis_retry composer update --prefer-stable --no-interaction --prefer-lowest ; fi
+  - if [[ $DEPS == 'latest' ]]; then travis_retry composer update --prefer-stable --no-interaction ; fi
 
 script:
   - composer test

composer.json

@@ -10,12 +10,12 @@
         }
     ],
     "require": {
-        "php": "^5.5 || ^7.0",
-        "container-interop/container-interop": "^1.0",
+        "php": "^5.6 || ^7.0",
+        "container-interop/container-interop": "^1.2",
         "ocramius/proxy-manager": "^1.0 || ^2.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.7 || ^5.0",
+        "phpunit/phpunit": "^5.7.27 || ^6.5.7",
         "snapshotpl/nano-container": "^1.0"
     },
     "autoload": {

test/LazyContainerTest.php

@@ -3,12 +3,12 @@
 namespace Snapshotpl\LazyContainer\Test;
 
 use ArrayObject;
-use PHPUnit_Framework_TestCase;
+use PHPUnit\Framework\TestCase;
 use ProxyManager\Factory\LazyLoadingValueHolderFactory;
 use Snapshotpl\LazyContainer\LazyContainer;
 use Snapshotpl\NanoContainer\NanoContainer;
 
-class LazyContainerTest extends PHPUnit_Framework_TestCase
+class LazyContainerTest extends TestCase
 {
     protected $container;
     protected $decoratedContainer;