Add fix tests, add missing phpdocs (#9)

* Add php 7.3 support, fix tests, add missing phpdocs

* Require new version of zend-code

* Remove php 7.3 support since proxy-manager v1 doesnt works with php 7.3

Author: snapshotpl

composer.json

@@ -16,7 +16,8 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^5.7.27 || ^6.5.7",
-        "snapshotpl/nano-container": "^1.0"
+        "snapshotpl/nano-container": "^1.0",
+        "container-interop/container-interop": "^1.2.0"
     },
     "autoload": {
         "psr-4": {

src/LazyContainer.php

@@ -22,6 +22,9 @@ public function __construct(
         $this->classMap = $classMap;
     }
 
+    /**
+     * @inheritDoc
+     */
     public function get($id)
     {
         if (!isset($this->classMap[$id])) {
@@ -37,6 +40,9 @@ public function get($id)
         return $this->proxyFactory->createProxy($this->classMap[$id], $initializer);
     }
 
+    /**
+     * @inheritDoc
+     */
     public function has($id)
     {
         return $this->container->has($id);