Circle align moved from the Toolbox to the multi-selection arrange buttons PR #3140 removed Circle Align from the Toolbox and made it a fourth group next to Align/Distribute/Order in the Edit Widgets panel, with a live radius and rotation setting, Done and Undo circle.
Document the legacy mode warning when widgets move between games (PR #3138)
Split Edit Mode page into eight Editing JSON subsections Break the Edit Mode page out into one page per Menu button (Edit Widgets, History, JSON, Widgets, Debug, Assets, Toolbox, Game Settings) under the Editing JSON section of the sidebar. Content is moved unchanged; the JSON page also keeps the editor-wide material (overview, top toolbar, menu, selecting widgets, widget toolbar). Editing JSON gains an overview of the new subsections, and inbound links were updated.