message: Implement <Del> in command/search mode
  Fixes
diff: @@ -894,6 +894,7 @@ class CommandInsertInSearchMode extends BaseCommand {
  ['<C-n>'],
  ['<Home>'],
  ['<End>'],
  + ['<Del>'],
  ];
  isJump = true;
  @@ -924,6 +925,10 @@ class CommandInsertInSearchMode extends BaseCommand {
  position,
  vimState
  );
  + } else if (key === '<Del>') {
  + searchState.searchString =
  + searchState.searchString.slice(0, vimState.statusBarCursorCharacterPos) +
  + searchState.searchString.slice(vimState.statusBarCursorCharacterPos + 1);
  } else if (key === '<Home>') {
  vimState.statusBarCursorCharacterPos = 0;
  } else if (key === '<End>') {
  