WIP: Upgrade to Laravel 8.x (#21)

Upgrade to Laravel 8.x

Author: mihan007

.travis.yml

@@ -1,7 +1,6 @@
 language: php
 
 php:
-  - 7.2
   - 7.3
   - 7.4
 

README.md

@@ -17,6 +17,7 @@ Mutex for Laravel Console Commands.
 
 | Laravel | Console Mutex                                                            |
 | ------- | :----------------------------------------------------------------------: |
+| 8.x     | [8.x](https://github.com/dmitry-ivanov/laravel-console-mutex/tree/8.x)   |
 | 7.x     | [7.x](https://github.com/dmitry-ivanov/laravel-console-mutex/tree/7.x)   |
 | 6.x     | [6.x](https://github.com/dmitry-ivanov/laravel-console-mutex/tree/6.x)   |
 | 5.8.*   | [5.8.*](https://github.com/dmitry-ivanov/laravel-console-mutex/tree/5.8) |

composer.json

@@ -12,17 +12,17 @@
         "email": "dmitry.g.ivanov@gmail.com"
     }],
     "require": {
-        "php": "^7.2.5",
+        "php": "^7.3",
         "ext-json": "*",
-        "illuminate/support": "^7.0",
-        "illuminate/console": "^7.0",
-        "arvenil/ninja-mutex": "^0.6"
+        "arvenil/ninja-mutex": "^0.6",
+        "illuminate/support": "^8.0",
+        "illuminate/console": "^8.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.4|^9.0",
         "mockery/mockery": "^1.3.1",
-        "orchestra/testbench": "^5.0",
-        "illuminated/testing-tools": "^7.0",
+        "orchestra/testbench": "^6.0",
+        "illuminated/testing-tools": "dev-master",
         "predis/predis": "^1.1.1",
         "ext-pdo_mysql": "*",
         "ext-redis": "*"