upgraded to symfony 4 #74 (#81)

config/packages/framework.yaml

@@ -0,0 +1,26 @@
+framework:
+    secret: '%env(APP_SECRET)%'
+    default_locale: en
+    csrf_protection: ~
+    #http_method_override: true
+
+    # Enables session support. Note that the session will ONLY be started if you read or write from it.
+    # Remove or comment this section to explicitly disable session support.
+    session:
+        handler_id:  session.handler.native_file
+        save_path:   "%kernel.project_dir%/var/sessions/%kernel.environment%"
+
+    #esi: ~
+    #fragments: ~
+    php_errors:
+        log: true
+
+    cache:
+        # The app cache caches to the filesystem by default. Other options include:
+
+        # Redis
+        #app: cache.adapter.redis
+        #default_redis_provider: redis://localhost
+
+        # APCu (not recommended with heavy random-write workloads as memory fragmentation can cause perf issues)
+        #app: cache.adapter.apcu