Add a mode that allows edit without the picker (#873)

doc/nvim-tree-lua.txt

@@ -579,6 +579,7 @@ Defaults to:
   lua <<EOF
     local list = {
       { key = {"<CR>", "o", "<2-LeftMouse>"}, action = "edit" },
+      { key = {"O"},                          action = tree_cb("edit_no_picker") },
       { key = {"<2-RightMouse>", "<C-]>"},    action = "cd" },
       { key = "<C-v>",                        action = "vsplit" },
       { key = "<C-x>",                        action = "split" },
@@ -621,11 +622,11 @@ The `list` option in `view.mappings.list` is a table of
 >
   lua <<EOF
     local tree_cb = require'nvim-tree.config'.nvim_tree_callback
-    
+
     local function print_node_path(node) {
       print(node.absolute_path)
     }
-    
+
     local list = {
       { key = {"<CR>", "o" }, action = "edit", mode = "n"},
       { key = "p", action = "print_path", action_cb = print_node_path },