Always keep img around

.gitignore

@@ -1,12 +1,13 @@
 # -*- mode: gitignore; -*-
 .*
 !.gitignore
+!.gitkeep
 !.gitlab-ci.yml
 *.lisp
 *\[*\]
 *.asd
 *.tex
-/imgs/*
+/imgs/*.png
 
 # Emacs Stuff
 *~