feat: update session to match new documentation

Author: mychidarko

.github/FUNDING.yml

@@ -70,6 +70,14 @@ public static function unset(string $key = null)
         Session::set(static::$config['key'], $data);
     }
 
+    /**
+     * Manually remove set flash message
+     */
+    public static function remove(): void
+    {
+        return static::unset('default');
+    }
+
     /**
      * Get the flash array
      *

.github/workflows/php-cs-fixer.yml

@@ -53,10 +53,11 @@ public static function get($param, $default = null, bool $sanitize = true)
      *
      * @param string $key the key to retrieve and remove the value for
      * @param mixed $defaultValue the default value to return if the requested value cannot be found
+     * @param boolean $sanitize Whether to sanitize the returned value
      *
      * @return mixed the requested value or the default value
      */
-    public static function retrieve($key, $default = null, $sanitize = false)
+    public static function retrieve($key, $default = null, $sanitize = true)
     {
         static::start();
 
@@ -78,6 +79,14 @@ public static function body()
         return $_SESSION;
     }
 
+    /**
+     * Get all session variables as an array
+     */
+    public static function all(): array
+    {
+        return static::body();
+    }
+
     /**
      * Set a new session variable
      *