vimrc updates

vimrc

@@ -50,7 +50,6 @@ set ttymouse=sgr
 set mouse=a
 set mousemodel=popup_setpos
 set lazyredraw
-set completeopt=menu,menuone,preview,longest
 set timeoutlen=600
 set ballooneval
 set balloonevalterm
@@ -62,8 +61,8 @@ set pastetoggle=<f2>
 set thesaurus=$HOME/Documents/thesaurus/thesaurus_pkg/thesaurus.txt
 
 " Colour scheme:
-colorscheme flattened_dark
-set background=dark
+colorscheme iceberg
+set background=light
 
 " Automatically load/save views on files.
 " https://vi.stackexchange.com/posts/13874/revisions
@@ -94,7 +93,7 @@ map <leader>v :vsplit<cr>
 map <leader>h :split<cr>file browser
 map <leader>! <esc>:only<cr>
 " ctrl-c to unload a buffer
-nnoremap <c-c> :bp\|bd #<cr>
+nnoremap <silent> <c-c> :bp\|bd #<cr>
 
 function! ToggleQuickFix()
   if empty(filter(getwininfo(), 'v:val.quickfix'))
@@ -119,7 +118,9 @@ map <Leader>* :call RequestGrep()<CR>
 map <Leader>8 :call RequestGrep()<CR>
 
 " deoplete configuration
+packadd! deoplete.nvim
 let g:deoplete#enable_at_startup = 1
+call deoplete#custom#option('num_processes', 2)
 
 " vim-markdown configuration:
 let g:vim_markdown_conceal = 1
@@ -128,7 +129,7 @@ let g:vim_markdown_conceal = 1
 let switchbuf="usetab"
 map <leader>T :CommandTFlush<CR>
 map <Leader>r :CommandTMRU<CR>
-map <Leader>H :CommandTHelp<CR>
+map <Leader>k :CommandTHelp<CR>
 map <Leader>c :CommandTCommand<CR>
 let g:CommandTFileScanner="git"
 let g:CommandTGitScanSubmodules=1