vim: enable coc only for v8.0 and up

vimrc

@@ -23,11 +23,9 @@ call plug#begin('~/.vim/plugged')
     Plug 'wesQ3/vim-windowswap'
     Plug 'majutsushi/tagbar'
 
-    " be sure to read full install instructions. this still needs
-    " you to cd ~/.vim/plugged/YouCompleteMe
-    " python ./install.py --js-completer
-    " Plug 'Valloric/YouCompleteMe'
+    if version >= 800
         Plug 'neoclide/coc.nvim', {'branch': 'release'}
+    endif
 
     Plug 'dense-analysis/ale'
     Plug 'tpope/vim-commentary'
@@ -153,6 +151,7 @@ augroup filetype
   au bufRead,BufNewFile *.cpp set filetype=cpp
   au bufRead,BufNewFile *.inc set filetype=make
   au BufRead,BufNewFile *.eex set filetype=html
+  au BufRead,BufNewFile *.bss set filetype=vb
 augroup END
 
 augroup cppprog
@@ -432,6 +431,8 @@ endfunction
 nnoremap <silent> <leader>wst :call ToggleWindowHorizontalVerticalSplit()<cr>
 " inoremap <lt>/ </<C-x><C-o><Esc>==gi
 
+" COC configuration
+if version >= 800
     " if hidden is not set, TextEdit might fail.
     set hidden
 
@@ -560,6 +561,7 @@ nnoremap <silent> <space>j  :<C-u>CocNext<CR>
     nnoremap <silent> <space>k  :<C-u>CocPrev<CR>
     " Resume latest coc list
     nnoremap <silent> <space>p  :<C-u>CocListResume<CR>
+endif
 
 nmap <Tab> :><CR>
 vmap <Tab> :><CR>