Hello,

I've bumped into a small issue while upgrading from v6 to v7 - AncestorOrSelf() (no parameters) now returns the node itself and not the root node as it was before - this breaks all my templates as I have been using AncestorOrSelf() as main method to get root node. 

To be version specific - I am updating from v6.1.3 to v6.2.1 then to v7.1.4 . I didn't find any related breaking change in versions specific lists from 6.1.3 to 7.1.4. Maybe i am missing something, but if not - it definitely should be there. 

When browsing Umbraco source, I found that this change was introduced in v6.2.0:

        // note: that one makes no sense and should return self  -- but fixing that
        // would be a breaking change. Defining FIX_AXES would fix the situation.
        public static IPublishedContent AncestorOrSelf(this IPublishedContent content)
        {
#if FIX_AXES
            return content;
#else
            return content.EnumerateAncestors(true).FirstOrDefault(x => x.Level == 1);
#endif
        }

As comment states, "#if FIX_AXES" should fix that. Maybe it fixes for v6 (haven't tested), but not for v7.1.4.