Bump min PHP and PHPUnit versions

Author: nicekiwi

.travis.yml

@@ -3,7 +3,6 @@ language: php
 php:
   - 7.3
   - 7.2
-  - 7.1
 
 notifications:
   slack: nukacode:HyFrc2QLi5PC5fPxadm07O5v

README.md

@@ -10,7 +10,7 @@
 
 **Version Support**  
 `Laravel >= 5.8.0`  
-`PHP >= 7.1.0`  
+`PHP >= 7.2.0`  
 
 - [Installation](#installation)
 - [Usage](#usage)

composer.json

@@ -10,13 +10,13 @@
     }
   ],
   "require": {
-    "php": "^7.1.0",
+    "php": "^7.2.0",
     "laravel/framework": ">=5.8.0",
     "guzzlehttp/guzzle": "^6.0",
     "nukacode/database": "^1.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^7.0",
+    "phpunit/phpunit": "^8.0",
     "orchestra/testbench": "^3.0"
   },
   "autoload": {