changelog.txt in minitel-0.4.0 vs changelog.txt in minitel-0.5.0

@@ -1,4 +1,13 @@
+0.5.0 2021-08-06
+================
+
+also send JSON content type
+move to GitHub Actions
+
+0.4.0 XXXX-XX-XX
+================
+
 0.3.0 2014-10-21
 ================
 
 Add Client#add_followup for adding followup to a previous notification