added N and W prority

autoload/todo.vim

@@ -40,11 +40,11 @@ endfunction
 function! todo#PrioritizeAdd (priority)
     let oldpos=todo#GetCurpos()
     let line=getline('.')
-    if line !~ '^([A-F])'
+    if line !~ '^([A-W])'
         :call todo#PrioritizeAddAction(a:priority)
         let oldpos[2]+=4
     else
-        exec ':s/^([A-F])/('.a:priority.')/'
+        exec ':s/^([A-W])/('.a:priority.')/'
     endif
     call setpos('.',oldpos)
 endfunction

ftplugin/todo.vim

@@ -59,6 +59,8 @@ if !exists("g:Todo_txt_do_not_map") || ! g:Todo_txt_do_not_map
     noremap  <script> <silent> <buffer> <localleader>a :call todo#PrioritizeAdd('A')<CR>
     noremap  <script> <silent> <buffer> <localleader>b :call todo#PrioritizeAdd('B')<CR>
     noremap  <script> <silent> <buffer> <localleader>c :call todo#PrioritizeAdd('C')<CR>
+    noremap  <script> <silent> <buffer> <localleader>n :call todo#PrioritizeAdd('N')<CR>
+    noremap  <script> <silent> <buffer> <localleader>w :call todo#PrioritizeAdd('W')<CR>
 
 " Insert date {{{3
     inoremap <script> <silent> <buffer> date<Tab> <C-R>=strftime("%Y-%m-%d")<CR>

syntax/todo.vim

@@ -50,6 +50,8 @@ highlight  default  link  TodoDone       Comment
 highlight  default  link  TodoPriorityA  Identifier
 highlight  default  link  TodoPriorityB  statement
 highlight  default  link  TodoPriorityC  type
+highlight  default  link  TodoPriorityN  Todo
+highlight  default  link  TodoPriorityW  CursorLineNr
 highlight  default  link  TodoDate       PreProc
 highlight  default  link  TodoProject    Special
 highlight  default  link  TodoContext    Special