Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/wordpress-seo-premium/src/models/prominent-words.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Yoast\WP\SEO\Models;
+
+use Yoast\WP\Lib\Model;
+
+/**
+ * Table definition for the Prominent Words table.
+ *
+ * @property int    $id                 The unique ID of this prominent word.
+ * @property string $stem               The stem of the prominent word.
+ * @property int    $indexable_id       The ID of the indexable in which the prominent word is located.
+ * @property float  $weight             Currently just the nr. of occurrences (of stemmed prominent word in indexable) But could be any weight value (higher means that it carries more weight in the final calculation).
+ */
+class Prominent_Words extends Model {
+
+	/**
+	 * Which columns contain float values.
+	 *
+	 * @var array
+	 */
+	protected $float_columns = [
+		'weight',
+	];
+}