• Display a warning (rather than triggering a fatal error) for scripts and style dependencies which have gone missing during the duration of the page load.
• Tweak some more Debug Bar add-on styles.
• Ensure erroneous non-SELECT queries are also highlighted in red.
• Further tweaks to QM's output if JavaScript isn't available for any reason.
• Add PHP4-style constructors to the Debug Bar classes to avoid fatals with Debug Bar add-ons which are explicitly using them.
• In the event that QM's JavaScript doesn't get enqueued, force the QM output to display so users can at least debug the issue.
• Remove the abstract output() methods from abstract classes which implement QM_Output to avoid PHP bug #43200.
• Fixing a notice in the admin component when get_current_screen() isn't an object.