Use development version.

echasnovski · echasnovski · commit dd75696c1f5a · 2024-02-22T21:32:30.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,5 @@
+# Version 0.12.0.9999
+
 # Version 0.12.0
 
 ## mini.basics
