Add winfix maps, quote airline theme

vimrc

@@ -77,9 +77,7 @@ set complete=.,b,u,]
 set wildignore+=deps/*,node_modules/*,*.sw?
 
 color desert
-if has("AirlineTheme")
-  let g:airline_theme=papercolor
-endif
+let g:airline_theme="papercolor"
 
 " enable syntax highlighting if it is supported
 if has("syntax")
@@ -201,6 +199,13 @@ map <C-Down>    :wincmd j<CR>
 map <C-Left>    :wincmd h<CR>
 map <C-Right>   :wincmd l<CR>
 
+" Don't automatically resize windows to be the same.
+set noequalalways
+" Fix the width of the window
+nnoremap <leader>wfw :set winfixwidth
+" Fix the height of the window
+nnoremap <leader>wfh :set winfixheight
+
 " map <C-Up> :wincmd k<CR>
 " map <C-Down> :wincmd j<CR>