1. Add ale.setup and ale.setup.buffer for pure Lua configuration.
2. Update many global settings to use Booleans instead of numbers to
make types easiert to work with in Lua.
3. Radically reformat documentation and fix errors to make
documentation more usable for Neovim users.
* add support for svelte via svelteserver language server
* svelte: fix Vint error and add a `svelteserver` simple test.
Co-authored-by: Joakim Repomaa <mail@j.repomaa.com>
Co-authored-by: Joakim Repomaa <mail@jreinert.com>