Take Screenshot
New Take Screenshot command (CmdScreenshot) in the Ctrl + k command palette captures the desktop and every visible window. An overlay shows thumbnails of the captures, labeled with process name and size. Pick one with the mouse or arrow keys and press Enter to save it as a PNG in the Screenshots folder of the SumatraPDF data directory.
Default zoom for images
The new ImageUI.DefaultZoom advanced setting sets the default zoom level for image files (default shrink to fit).
Toggle Use Tabs (CmdToggleUseTabs) switches between tabbed and non-tabbed mode right away, with no restart. The menu bar can now be shown when tabs are on; before, it was only available without tabs.