Major optimization refactor, across the board

+ enable lexical-scope everywhere (lexical-binding = t): ~5-10% faster
  startup; ~5-20% general boost
+ reduce consing, function calls & garbage collection by preferring
  cl-loop & dolist over lambda closures (for mapc[ar], add-hook, and
  various cl-lib filter/map/reduce functions) -- where possible
+ prefer functions with dedicated opcodes, like assq (see byte-defop's
  in bytecomp.el for more)
+ prefer pcase & cond (faster) over cl-case
+ general refactor for code readability
+ ensure naming & style conventions are adhered to
+ appease byte-compiler by marking unused variables with underscore
+ defer minor mode activation to after-init, emacs-startup or
  window-setup hooks; a customization opportunity for users + ensures
  custom functionality won't interfere with startup.

modules/lang/emacs-lisp/config.el

@@ -1,10 +1,9 @@
-;;; lang/emacs-lisp/config.el
+;;; lang/emacs-lisp/config.el -*- lexical-binding: t; -*-
 
 (def-package! elisp-mode ; built-in
   :mode ("/Cask$" . emacs-lisp-mode)
   :init
   (add-hook 'emacs-lisp-mode-hook #'+emacs-lisp|hook)
-
   :config
   (set! :repl 'emacs-lisp-mode #'+emacs-lisp/repl)
   (set! :eval 'emacs-lisp-mode #'+emacs-lisp-eval)