Added hidden buffer mode and solved line numbers disappearing on window with term

init.vim

@@ -6,6 +6,9 @@ if !has('nvim')
   setlocal cm=blowfish2
 end
 
+" allow unsaved hidden buffers
+set hidden
+
 " set relative line numbers
 set number relativenumber
 
@@ -19,7 +22,10 @@ if has('nvim')
   " prevent terminal buffers to be closed when changing buffer
   autocmd TermOpen * set bufhidden=hide
 
-  " remove line numbers to terminale
+  " restore line numbers for all buffers (revert changes of cmd below)
+  autocmd BufCreate * set rnu nu
+
+  " remove line numbers to terminal
   autocmd TermOpen * set nornu nonu
 end
 
@@ -62,7 +68,7 @@ endfunction
 inoremap <silent> <tab> <C-r>=AutocompleteIfKeyword()<CR>
 
 " use standard vim autocomplete as fallback
-let g:autocomplete_key = "\<C-n>"
+let g:autocomplete_key = "\<C-N>"
 
 " autocomplete with Tsuquyomi on TypeScript files
 autocmd FileType typescript let g:autocomplete_key = "\<C-x>\<C-o>"