Add extending selection with find/search in visual mode

[crantok]

In codemirror's vim demo ( https://codemirror.net/demo/vim.html ) the '/' activates the find dialog while in visual mode. Entering a useful search term and then pressing enter, extends the current selection to the beginning of the search term.

In Light Table, the '/' key has no effect in visual mode. Using the LT command menu to choose "Find: In current editor" does open the find dialog but, upon completion, the cursor is moved without extending the selection. The editor is still in visual mode.