Full upgrade

Author: bsadnu

composer.json

@@ -1,6 +1,6 @@
 {
   "name": "bsadnu/php-exceptions",
-  "description": "The helpful custom PHP exceptions",
+  "description": "The helpful custom PHP exceptions and exception interfaces",
   "keywords": ["PHP", "exception", "exceptions", "custom-exceptions"],
   "type": "library",
   "license": "MIT",
@@ -13,9 +13,6 @@
   "require": {
     "php": "^7.1"
   },
-  "require-dev": {
-    "phpunit/phpunit": "~4"
-  },
   "autoload": {
     "psr-4": {
       "Bsadnu\\Exception\\": "src/"