fix: Convert lib/ autoloader to classmap and introduce PSR-4 src/ namespace
fix: only encrypt for own key if 'save_sent' is activated (Mahdi Pasche, B1 Systems GmbH)
fix: Fix in HTML Viewer (Torben Dannhauer)
fix: Horde Bug 15122: Fix privacy issue with remote images being loaded despite user's preference not to load remote images. May have security consequences, too. (contributed by Jens Wahnes).