add submodule "deflate" needed by "plantuml-mode"

.gitmodules

@@ -217,3 +217,6 @@
 [submodule "site-lisp/pinentry"]
 	path = site-lisp/pinentry
 	url = https://github.com/ueno/pinentry-el.git
+[submodule "site-lisp/deflate"]
+	path = site-lisp/deflate
+	url = https://github.com/skuro/deflate.git

lisp/init-plantuml.el

@@ -3,6 +3,7 @@
 (require 'init-package)
 (add-pkg-in-pkg-dir "plantuml-mode")
 (add-pkg-in-pkg-dir "dash")
+(add-pkg-in-pkg-dir "deflate")
 
 (autoload 'plantuml-mode "plantuml-mode" "" t)
 (add-to-list 'auto-mode-alist '("\\.\\(plantuml\\|pum\\|plu\\)\\'" . plantuml-mode))