New schema to support the 3.1 changes in Core.
New SASS-based gradients for the optional gradients stylesheet in base-V2.
Minor changes to the base-v2 colors for the body and listing tables.
New utility to run the series of next upgrades for all components on the system.
Fix Set data to at least a blank array on Dataset::execute.

This prevents blank query results from re-executing the query multiple times.
Fix the DateTime relative formatting, although we still need a proper locale system.
Components can run the "next" upgrade.
Add a few more profiling points in Core.
New referrer tracking and better exit status handling in Form systems.
New image meta tag, sets the og:image meta.
New support for simple widgets and settings data in widgets.
Switch the smarty date function to use a constant instead of the string.
Allow for short-hand {link} usage in smarty.
Spelling correction
New support for PageModel editurl, deleteurl, images, and popularity scores.
Add the WidgetInstance link and editurl to Widgets.
Fix the filters form, add a hidden submit button so [enter] works on filters.
New systems, /admin/pages and /admin/widgets
Add a few more profiling points in Core.
Migrating the Blog to the new way of handling content.