message: Fix :tabm to use moveActiveEditor command
  Fix :tabm to use moveActiveEditor command (closes
diff: @@ -119,18 +119,17 @@ export class TabCommand extends node.CommandBase {
  await vscode.commands.executeCommand('workbench.action.closeOtherEditors');
  break;
  case Tab.Move:
  - if (this._arguments.count !== undefined) {
  - if (this._arguments.count === 0) {
  - vscode.commands.executeCommand('activeEditorMove', { to: 'first' });
  + if (this.arguments.count === 0) {
  + await vscode.commands.executeCommand('moveActiveEditor', { to: 'first' });
  + } else if (this.arguments.count === undefined) {
  + await vscode.commands.executeCommand('moveActiveEditor', { to: 'last' });
  } else {
  - vscode.commands.executeCommand('activeEditorMove', {
  + await vscode.commands.executeCommand('moveActiveEditor', {
  to: 'position',
  - amount: this._arguments.count,
  + by: 'tab',
  + value: this.arguments.count + 1,
  });
  }
  - } else {
  - vscode.commands.executeCommand('activeEditorMove', { to: 'last' });
  - }
  break;
  default:
  