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/purescript/packages.el

@@ -2,10 +2,10 @@
 ;;; lang/purescript/packages.el
 
 ;; As far as I can tell, at the moment, flycheck-purescript does not work well
-;; due to expecting the compiler to be psc rather than purs.
-;; However, one of purescript-mode or psc-ide seems to handle flycheck, so it
-;; might be unnecessary altogether.
-;; (package! flycheck-purescript)
+;; due to expecting the compiler to be psc rather than purs. However, one of
+;; purescript-mode or psc-ide seems to handle flycheck, so it might be
+;; unnecessary altogether.
+;;(package! flycheck-purescript)
 
 (package! psc-ide)
 (package! purescript-mode)