composer: added PHPStan

Author: dg

.travis.yml

@@ -42,12 +42,8 @@ jobs:
 
 
         -   stage: Static Analysis (informative)
-            install:
-                # Install PHPStan
-                - travis_retry composer create-project phpstan/phpstan-shim temp/phpstan --no-progress
-                - travis_retry composer install --no-progress --prefer-dist
             script:
-                - php temp/phpstan/phpstan.phar analyse --autoload-file vendor/autoload.php --level 5 src
+                - composer run-script phpstan
 
 
         -   stage: Code Coverage

composer.json

@@ -17,10 +17,17 @@
 	"require": {
 		"php": ">=7.1"
 	},
+	"require-dev": {
+		"phpstan/phpstan": "^0.12"
+	},
 	"autoload": {
 		"classmap": ["src/"]
 	},
 	"bin": ["src/tester"],
+	"scripts": {
+		"phpstan": "phpstan analyse --level 5 src",
+		"tester": "tester tests -s"
+	},
 	"extra": {
 		"branch-alias": { "dev-master": "2.4-dev" }
 	}