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.
* Added hdl_checker support
* Added hdl_checker tests
HDL Checker searches for files when no config file is found, which could lead to very long searches when the user is not really on a project setting