You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
PluginsArea: what it touches
ImprovementsKind: in v2.1.281,
ImprovementsSection of the release
What
Plugins can draw their own interface elements. When one of these elements is pressed and held, the plugin can now check the value and refuse it, in which case the message is that it does not take that value and nothing ran. These events can also carry a request ID. ui.render now runs inside a drawing context.
Why
A refused value now ends with a clear statement that nothing ran, rather than the element acting on input it cannot use.