Quiz permissions, quiz randomisation control, quiz answer reveal control
Much tidier quiz result display, and misc tuning
Non-marked questions
Many improvements to quiz reporting
Quiz categorisation system / convention
Quiz categorisation system -- generalised it better
Some minor quiz improvements
Misc changes
Attachment opengraph image detection fixes
misc fixes
More quiz documentation
Misc fixes and doc improvements
Fixed some display problems
Improved tooltip rendering at rhs edge
Detect HTML forum images for OpenGraph image
Fix to CPF nullness
COR / crossdomain code