Add generic vim improvements

* spellchecking
* make quickfix take up lower third, regardless of windows

vim/vimrc.symlink

@@ -206,6 +206,9 @@ map <leader>e :e! ~/.vimrc<cr>
 " clear highlighted search
 noremap <space> :set hlsearch! hlsearch?<cr>
 
+" activate spell-checking alternatives
+nmap ;s :set invspell spelllang=en<cr>
+
 " toggle invisible characters
 set invlist
 set listchars=tab:▸\ ,eol:¬,trail:⋅,extends:❯,precedes:❮
@@ -319,3 +322,4 @@ if (has("gui_running"))
 endif
 
 let vimrc_already_sourced = 1
+