Use :mode instead of :redraw! when updating menu. (#1016)

* Use :mode instead of :redraw! when updating screen.

In neovim, it will actually clear the whole screen, whereas, redraw!
does not.

* Update version number in change log.

CHANGELOG.md

@@ -1,6 +1,8 @@
 # Change Log
 
 #### 5.2...
+- **.5**: Use `:mode` instead of `:redraw!` when updating menu. (PhilRunninger) #1016
+- **.4**: When searching for root line num, stop at end of file. (PhilRunninger) #1015
 - **.3**: Fix `<CR>` key map on the bookmark (lkebin) #1014
 - **.2**: Make Enter work on the `.. ( up a dir )` line (PhilRunninger) #1013
 - **.1**: Fix nerdtree#version() on Windows. (PhilRunninger) N/A

lib/nerdtree/menu_controller.vim

@@ -31,7 +31,7 @@ function! s:MenuController.showMenu()
         let l:done = 0
 
         while !l:done
-            redraw!
+            mode
             call self._echoPrompt()
 
             let l:key = nr2char(getchar())

lib/nerdtree/ui.vim

@@ -254,7 +254,7 @@ endfunction
 " gets the line number of the root node
 function! s:UI.getRootLineNum()
     let rootLine = 1
-    while getline(rootLine) !~# '^\(/\|<\)'
+    while rootLine <= line('$') && getline(rootLine) !~# '^\(/\|<\)'
         let rootLine = rootLine + 1
     endwhile
     return rootLine