message: Make WxH canvas scaling the default
  fixes
diff: @@ -18,7 +18,7 @@ import * as matrix from '../utils/matrix';
  const defaultFramebufUIState: FramebufUIState = {
  canvasTransform: matrix.ident(),
  - canvasFit: 'fitWidth'
  + canvasFit: 'fitWidthHeight'
  };
  const emptyTransform: Transform = {
  