Re-add PHP 5.5, make use of the most up to date dependencies on higher PHP versions.

.travis.yml

@@ -10,6 +10,7 @@ cache:
     - "$HOME/.composer/cache"
 
 php:
+  - 5.5
   - 5.6
   - 7.0
   - 7.1
@@ -44,5 +45,4 @@ script:
   - if [ "$TRAVIS_PHP_VERSION" == "7.1" ] ; then composer test-cov; else composer test; fi
 
 after_script:
-  - if [ "$TRAVIS_PHP_VERSION" == "7.1" ]; then
-    wget https://scrutinizer-ci.com/ocular.phar && php ocular.phar code-coverage:upload --format=php-clover build/logs/clover.xml; fi
+  - if [ "$TRAVIS_PHP_VERSION" == "7.1" ]; then composer test-cov-upload; fi

composer.json

@@ -18,16 +18,16 @@
         }
     ],
     "require": {
-        "php": ">=5.6",
+        "php": "^5.5|^7.0",
         "ext-pdo": "*",
         "ext-curl": "*",
         "ext-mbstring": "*",
-        "monolog/monolog": "^1.19",
-        "guzzlehttp/guzzle": "~6.0"
+        "monolog/monolog": "^1.22",
+        "guzzlehttp/guzzle": "^6.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.7",
-        "squizlabs/php_codesniffer": "~2.5"
+        "phpunit/phpunit": "^4.8|^5.7|^6.1",
+        "squizlabs/php_codesniffer": "^2.8"
     },
     "autoload": {
         "psr-4": {
@@ -43,11 +43,14 @@
         "check-code": [
             "./vendor/bin/phpcs --standard=phpcs.xml -snp --encoding=utf-8 src/ --report-width=150"
         ],
+        "test": [
+            "./vendor/bin/phpunit"
+        ],
         "test-cov": [
             "./vendor/bin/phpunit --coverage-clover build/logs/clover.xml"
         ],
-        "test": [
-            "./vendor/bin/phpunit"
+        "test-cov-upload": [
+            "wget https://scrutinizer-ci.com/ocular.phar && php ocular.phar code-coverage:upload --format=php-clover build/logs/clover.xml"
         ]
     }
 }

tests/unit/TestCase.php

@@ -10,7 +10,7 @@
 
 namespace Longman\TelegramBot\Tests\Unit;
 
-class TestCase extends \PHPUnit_Framework_TestCase
+class TestCase extends \PHPUnit\Framework\TestCase
 {
     /**
      * @var string