added phpstan for code analyzes (#806)

symfony.lock

@@ -189,6 +189,9 @@
     "jdorn/sql-formatter": {
         "version": "v1.2.17"
     },
+    "jean85/pretty-package-versions": {
+        "version": "1.2"
+    },
     "jms/metadata": {
         "version": "1.6.0"
     },
@@ -243,6 +246,30 @@
             "ref": "f0436fc35fca88eada758311f8de43bfb61f1980"
         }
     },
+    "nette/bootstrap": {
+        "version": "v3.0.0"
+    },
+    "nette/di": {
+        "version": "v3.0.0"
+    },
+    "nette/finder": {
+        "version": "v2.5.0"
+    },
+    "nette/neon": {
+        "version": "v3.0.0"
+    },
+    "nette/php-generator": {
+        "version": "v3.2.2"
+    },
+    "nette/robot-loader": {
+        "version": "v3.2.0"
+    },
+    "nette/schema": {
+        "version": "v1.0.0"
+    },
+    "nette/utils": {
+        "version": "v3.0.1"
+    },
     "nikic/php-parser": {
         "version": "v4.0.2"
     },
@@ -291,6 +318,12 @@
     "phpspec/prophecy": {
         "version": "1.7.3"
     },
+    "phpstan/phpdoc-parser": {
+        "version": "0.3.3"
+    },
+    "phpstan/phpstan": {
+        "version": "0.11.7"
+    },
     "phpunit/php-code-coverage": {
         "version": "5.3.0"
     },