Release v4.48.2

Fixed

• The VS Code extension's event model board now draws the file that is open. Inside a folder application every file used to draw the same board, the whole folder; now a slice file draws its slices, a module or feature file draws the slices it imports or that are placed in what it declares, and application.play draws the whole application. A file with no slice of its own, such as one that only declares concepts or types, still draws the whole application. Every slice is drawn against everything the application declares, and the problems listed above the board are the ones in the files it draws. See Folder applications.