+ New command: doom/popup-kill-all
+ Update references to :fixed (now named :static)
+ Simplified doom-popup-p; moved :static filtering to
doom-popup-windows.
+ New :autofit popup property, which resizes the popup to fit its
content, if possible.
+ doom-popup-windows now takes one boolean argument: whether to ignore
static popups or not.
+ 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.
