[WIP] contrib: localvimrc

Is anyone at all using https://github.com/neovim/neovim/tree/master/contrib/vim-addon-local-vimrc ?
Quick test:

    mkdir test
    cd test
    git clone https://github.com/embear/vim-localvimrc
    echo $'throw &filetype' > .lvimrc
    echo $'set nocompatible rtp=$VIMRUNTIME,vim-localvimrc\nfiletype plugin indent on' > vimrc
    vim -u vimrc -i NONE a.py

that this is also the case for the referenced plugin: after confirming that I do want to load local vimrc I get “E605: Exception not caught: python”. If I edit a new file (e.g. type `:e b.py<CR>y`) the message is the same. Thus you must not use FileType event and suggest that plugin at once.