Add archival notice

README.md

@@ -1,3 +1,21 @@
+2023-02-25:
+
+It has been more than a year now that I no longer have Apple hardware.
+I am using Linux exclusively and I do not anticipate the situation changing in
+the foreseeable future, therefore I'm unable to keep updating the macOS port
+and I'm forced to archive it for now. I could still accept submissions, but I
+have a policy of not publishing anything I don't use or can't test myself.
+
+Don't let it discourage you, though; unless you benefit from the [changes made
+in version 1.3](https://eurkey.steffen.bruentjen.eu/changelog.html) (in beta
+for many years now — it might as well be considered released *de facto* at this
+point) the layout you'll find here remains as useful as ever and will not "rot",
+at least not until Apple decides to break the keyboard layout format in a future
+version of macOS.
+
+---
+
+
 EurKEY-Mac
 ==========