BUG: Fix UTF-8 encoding in python.snippets
CLN: remove vim/spell/ for now
DOC: update ListMappings to include vimrc.bundles
ENH: Add Set256 and Set88 commands
DOC: <Leader>E or <ctrl-E> to NERDTreeFind
BUG: vimrc.bundles: don't set g:airline_theme (allow to auto-configure)
DOC: vimrc.bundles: comments formatting, Riv.vim: 'help riv' comments
ENH: add https://github.com/jmcantrell/vim-virtualenv for :VirtualEnv{List, ...}
BUG: don't set statusline (so that source ~/.vimrc doesn't overwrite vim-airline)
BUG: comment out PreviewHeightWorkAround for now
BUG: don't call PatchColors()
ENH: add vim-virtualenv