add twilight-term256 color scheme
update nvimrc
nvim: add YouCompleteMe
nvim: move backup files out of working dir
nvim: add Qargs command
nvim: add haskell
zsh: remove custom VIMRUNTIME
git: update gitconfig
git: use nvim as editor
zsh: use system installed nvim by default

added nvimd alias for development build of nvim
nvim: remove pathogen
nvim: add VIM-Plug with plugins from pathogen
nvim: add rust