refactor: created root exception

src/Exception/Exception.php

@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PetrKnap\Optional\Exception;
+
+use Throwable;
+
+/**
+ * @internal root exception
+ */
+interface Exception extends Throwable
+{
+}

src/Exception/OptionalException.php

@@ -4,8 +4,6 @@
 
 namespace PetrKnap\Optional\Exception;
 
-use Throwable;
-
-interface OptionalException extends Throwable
+interface OptionalException extends Exception
 {
 }

src/Exception/TypedOptionalException.php

@@ -4,6 +4,9 @@
 
 namespace PetrKnap\Optional\Exception;
 
+/**
+ * @todo do extend {@see Exception}, not {@see OptionalException}
+ */
 interface TypedOptionalException extends OptionalException
 {
 }