Document changes and release 18

debian/changelog

+librem5-base (18) amber-phone; urgency=medium
+
+  * gnome-dev: Drop libwlroots-examples.
+    We don't build them for amber and they're not as useful as they used to be
+    when used for taking screenshots and to test rootston.
+
+ -- Guido Günther <agx@sigxcpu.org>  Fri, 22 May 2020 14:42:59 +0200
+
 librem5-base (17) amber-phone; urgency=medium
 
   [ Guido Günther ]