Add additional hooks for Templates and Fields classes for consistency with Pages class. saved(), saveReady(), deleted(), added(), etc.  Most of these are actually defined in WireSaveableItems class.
add httpUrl() function to Pagefile class, which covers all file and image fields.
Updates to $page->render(); method. Now you can specify $page->render($options); or $page->render($filename, $options); See the function phpdocs for PageRender::renderPage method for more details.