Bugfixes

- Fixed `Url` not outputting correct class when used in json_encode.
- Fixed `IInputItem` being too strict about strings which may be nullable.

src/Pecee/Http/Input/IInputItem.php

@@ -9,14 +9,14 @@ interface IInputItem
 
     public function setIndex(string $index): self;
 
-    public function getName(): string;
+    public function getName(): ?string;
 
     public function setName(string $name): self;
 
-    public function getValue(): string;
+    public function getValue(): ?string;
 
     public function setValue(string $value): self;
 
-    public function __toString();
+    public function __toString(): string;
 
 }