Remove submodules.
Move files to 'zsh' subdirectory.
Add submodules under new path.
Update README.
Rename repository from ".zsh" to ".dotfiles"
Add note about TERM_PROGRAM variable.
Update zshrc.
Extract common parts to a separate file.
Add tmux.conf
Add vimrc
Add vimpager as submodule.
Add rmate as submodule.
Check platform in zshrc
to do platform-specific configuration.
Different configuration files aren't needed any more.