Pimp my Vim

Well, that's an overhaul.

This migrates my .vimrc to https://github.com/junegunn/vim-plug instead
of Vundle. Plug allows you to download/update plugins concurrently and
load them lazily.

This also includes kind of another set of defaults for my Vim. I've used
vim-sensible for a while, but it was breaking some of my settings. So
it heavily inspired me to write modern.vim, a much larger set of
sensible defaults for Vim users.

I've tried hard that it won't have any of my personal preferred
defaults, and only general ones. Typically these settings are fixes of
problems you typically ask at Stack Overflow about Vim.

https://github.com/yegortimoschenko/modern.vim

And yes, I've also added no-arrows.vim plugin to ensure that I don't use
arrows in the input mode.

https://github.com/yegortimoschenko/no-arrows.vim

P.S: I've also decided to store fetched Vim plugins here, so I don't
need to run :PlugInstall everywhere.