Major refactor: use-package-always-defer = nil & use :hook

Possibly breaking change: packages are no longer deferred by default.

Addresses #286

modules/lang/java/+meghanada.el

@@ -1,9 +1,7 @@
 ;;; lang/java/+meghanada.el -*- lexical-binding: t; -*-
 
 (def-package! meghanada
-  :commands meghanada-mode
-  :init
-  (add-hook! 'java-mode-hook #'(meghanada-mode rainbow-delimiters-mode))
+  :hook (java-mode . meghanada-mode)
   :config
   (setq meghanada-server-install-dir (concat doom-etc-dir "meghanada-server/")
         meghanada-use-company (featurep! :completion company)
@@ -11,6 +9,8 @@
         meghanada-use-eldoc t
         meghanada-use-auto-start t)
 
+  (add-hook 'java-mode-hook #'rainbow-delimiters-mode)
+
   ;; Setup on first use
   (meghanada-install-server)
   (if (file-exists-p (meghanada--locate-server-jar))