Update debian changelog in case we ever use it again

debian/changelog

@@ -1,8 +1,14 @@
+evomaintenance (0.6.3-1) UNRELEASED; urgency=low
+
+  * fix partitions re-mounting before/after commits
+
+ -- Jérémy Lecour <jlecour@evolix.fr>  Mon, 3 Mar 2020 22:14:12 +0100
+
 evomaintenance (0.6.0-1) UNRELEASED; urgency=low
 
-  * commit changes in /usr/share/scripts/ if needed
+ * commit changes in /usr/share/scripts/ if needed
 
- -- Jérémy Lecour <jlecour@evolix.fr>  Tue, 5 Nov 2019 14:50:12 +0100
+-- Jérémy Lecour <jlecour@evolix.fr>  Tue, 5 Nov 2019 14:50:12 +0100
 
 evomaintenance (0.5.1-1) UNRELEASED; urgency=low