Moved admin files to their own directory, trying to get a comprehensive structure in place

admin/class-adminsettings.php

@@ -6,7 +6,7 @@ if ( ! defined( 'ABSPATH' ) ) {
 	exit;
 }
 
-class Settings {
+class AdminSettings {
 
 	/**
 	 * Class constructor.
@@ -93,4 +93,4 @@ class Settings {
 
 }
 
-new Settings();
+new AdminSettings();

admin/class-install.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace PluginNamespace;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+class Install {
+
+	private static $db_updates = array(
+		'1.1.0' => array(
+			'dh_update_110_options',
+		),
+	);
+
+}

admin/nmsp-update-functions.php

@@ -0,0 +1,18 @@
+<?php
+
+if ( ! defined( 'ABSPATH' ) ) {
+    exit;
+}
+
+/**
+ * Update something in the database
+ *
+ * @since 1.1.0
+ *
+ * @return void
+ */
+function dh_update_110_options() {
+	global $wpdb;
+
+	// do the thing here to update the database
+}