Update the changelog with recent changes

Author: matthiask

docs/changes.rst

@@ -13,6 +13,10 @@ Features
 * New decorator ``debug_toolbar.decorators.require_show_toolbar`` prevents
   unauthorized access to decorated views by checking ``SHOW_TOOLBAR_CALLBACK``
   every request. Unauthorized access results in a 404.
+* The ``SKIP_TEMPLATE_PREFIXES`` setting allows skipping templates in
+  the templates panel. Template-based form widgets' templates are
+  skipped by default to avoid panel sizes going into hundreds of
+  megabytes of HTML.
 
 Bugfixes
 ~~~~~~~~
@@ -23,6 +27,7 @@ Bugfixes
 * The templates panel now reuses contexts' pretty printed version which
   makes the debug toolbar usable again with Django 1.11's template-based
   forms rendering.
+* Long SQL statements are now forcibly wrapped to fit on the screen.
 
 1.7
 ---