Allow items to specify base tables to skip and create a relationship from upload --> node that will not allow circular relationships.

Unnecessary label on exposed search form; missing "Group" designation on upload: attached files; some minimal but useful documentation on writing handlers

#274360: Add hard path checking to Node from URL and User from URL to get instances where core menu loader functions are not in use.

Create a "soft" fail condition for arguments, which means that if an argument is part of a % placeholder in a URL, failing validation is not actually a failure IF there is some other action to take when validation fails.

#271240 by mschiff: pgsql compatibility, left() doesn't exist but substr() exists in both pgsql and mysql.

#273570: Work around a FAPI limitation that only lets me validate a given form once even though I need to validate it an arbitrary number of times.

Fix argument validator so that access() is handled properly like it is on the default argument type.

#274807: setting the validate fail action to summary was not informing the UI that a style plugin is needed.

Change the update button to "update default display" when you are changing values on the default display.

#274482 by aclight: Remove unnamed Apply button from filter values so that it does not later appear in URLs.

#274341 by mooffie: Check for the presence of template files so that we can tell if a template got renamed but theme registry was not cleared.

#270920 by mooffie: Add checkbox to feed displays to allow use of the site name for the feed title, in order to better duplicate the basic Drupal rss.xml capability.

#270892 by aclight (expanded by me): put default action and validator options in a fieldset to make the form less confusing.