set! used to aggressively evaluate its arguments (at expansion-time),
even if placed inside an after! block. This causes unavoidable errors if
those arguments use functions/variables that don't exist yet.
Fixes#112
+ 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).
