Completed result/option migration

- Change casing on exposed constants
- Add file-level phpdoc

src/public/docs/feeds.php

@@ -1,4 +1,10 @@
-<?php declare(strict_types=1);
+<?php
+/**
+ * @author Daniel J. Summers <daniel@bitbadger.solutions>
+ * @license MIT
+ */
+
+declare(strict_types=1);
 
 include '../../start.php';