Prepare changelog for Debian release 1.0.0-1

debian/changelog

+python-multipledispatch (1.0.0-1) unstable; urgency=medium
+
+  * New upstream release.
+    - Refresh patches
+  * Bump Standards-Version to 4.6.2 (no changes needed)
+  * d/s/options: Ignore .egg-info in diffs (Closes: #1047479)
+
+ -- Christian Kastner <ckk@debian.org>  Tue, 15 Aug 2023 19:35:36 +0200
+
 python-multipledispatch (0.6.0-3) unstable; urgency=medium
 
   * Fix autopkgtest (missing dependency)