Add InvalidValue->getFailedSubSchema to receive schema that failed validation, resolves #73

Author: vearutop

Diff for: composer.json

@@ -6,12 +6,10 @@
     "php": ">=5.4",
     "ext-json": "*",
     "phplang/scope-exit": "^1.0",
-    "swaggest/json-diff": "^3.4.2"
+    "swaggest/json-diff": "^3.5.1"
   },
   "require-dev": {
     "phpunit/phpunit": "4.8.35",
-    "swaggest/code-builder": "dev-master#e0c5c0612fd241d2d120e5ddef91cda9edc208ee",
-    "swaggest/php-code-builder": "dev-master#3e643924445eb0f8d13dd011a57a42ce75629892",
     "phpunit/php-code-coverage": "2.2.4",
     "codeclimate/php-test-reporter": "^0.4.0"
   },
@@ -36,9 +34,6 @@
       "Swaggest\\JsonSchema\\Tests\\": "tests/src/"
     }
   },
-  "scripts": {
-    "gen-json-struct": "php ./tools/generate_json_structures.php"
-  },
   "config": {
     "platform": {
       "php": "5.4.45"