• improve initialization of ui.interactive_image to avoid "Too many packets in payload" (#209, #320)
• prevent ui.input, ui.number, and ui.color_input from dropping keys when typing fast (#287, #306, thanks @FI-Mihej for the pull request)
• fix camera's look_at target in 3D scene (#296)
• replace dummy images for API reference (#314)
• catch WebGL exception in ui.scene and show error message (#315, #325)
• allow creating UI elements within app.on_startup (#316)
• improve stability of pytests (#321)
• cleanup background_tasks and introduce create_lazy() (#323)
• allow opening and closing ui.expansion programmatically (#330)
• improve node selection, expansion, and ticking events in ui.tree (#331)
• fix initialization of ui.input, ui.number, and ui.color_input without label or placeholder
• fix awaiting a ui.dialogin Python <=3.9
• fix legibility of the connection popup in dark mode