message: Fixes recomputeMatrix in framedGraphToViewport
  The matrix was recomputed all the time because of that issue. More
  precisely, when moving the mouse, the matrix was so much rerendered that
  it was lagging in Chrome for medium graphs.
diff: @@ -1378,7 +1378,7 @@ export default class Sigma extends EventEmitter {
  padding?: number;
  } = {},
  ): Coordinates {
  - const recomputeMatrix = !!override.cameraState || !!override.viewportDimensions || !override.graphDimensions;
  + const recomputeMatrix = !!override.cameraState || !!override.viewportDimensions || !!override.graphDimensions;
  const matrix = override.matrix
  ? override.matrix
  : recomputeMatrix
  