message: Set < and > marks when yanking in visual mode.
diff: @@ -280,6 +280,12 @@ export class YankOperator extends BaseOperator {
  Register.put(text, vimState, this.multicursorIndex);
  + if (vimState.currentMode === ModeName.Visual || vimState.currentMode === ModeName.VisualLine) {
  + end = new Position(end.line, end.character - 1);
  + vimState.historyTracker.addMark(start, '<');
  + vimState.historyTracker.addMark(end, '>');
  + }
  +
  await vimState.setCurrentMode(ModeName.Normal);
  vimState.cursorStartPosition = start;
  @@ -660,6 +666,9 @@ export class YankVisualBlockMode extends BaseOperator {
  Register.put(toCopy, vimState, this.multicursorIndex);
  + vimState.historyTracker.addMark(start, '<');
  + vimState.historyTracker.addMark(end, '>');
  +
  const numLinesYanked = toCopy.split('\n').length;
  ReportLinesYanked(numLinesYanked, vimState);
  