Replace a fair amount of mappings with a langmap

Stolen from Andrew:
https://github.com/AndrewRadev/Vimfiles/commit/f4e60a2254004e1ac07bc5e1a370da738553cdd0

Upgrade vim-plug and make it work with neovim

Use easier mapping to copy and paste under Wayland

Update plugins

Select pasted text

Indent lua code with two spaces

Install vim-hcl

Update plugins

Replace ctrlp with fzf

Set textwidth=79 in markdown files

Enable go popups and remove outdated overrides

Remap <leader>g to :Git

vim-fugitive deprecates :Gstatus in favor of :Git without arguments.

Update plugins

Tidy up the readme

Add LICENSE

Make arrow keys in vim great again

Update plugins

Add ftplugin/json.vim

Add ftplugin/perl.vim

Apart from general tab options this adds ~/perl5/ptags to tags and
introduces mapping for (in|de)crease prove's test plan count.

Do not consider Foo::bar as one word in perl