+ Add doom-init-hook and doom-post-init-hook to simplify Emacs init
hooks into less ambiguous ones.
+ Attach former after-init-hook and emacs-startup-hook hooks to new doom
init hooks.
+ Vastly improves daemon and tty support: preventing incorrect colors
from bleeding across face class barriers, and into GUI Emacs and vice
versa, when spawned with emacsclient.
+ Fix persp-mode breaking Emacs daemon, and ensuring that initialization
is done properly in terminal Emacs (and emacsclient frames).
+ 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.
