ChangeLog in tdiary-blogkit-5.1.7 vs ChangeLog in tdiary-blogkit-5.2.0

@@ -1,4 +1,7 @@
[phone] Tada, Tadashi <[e-mail]>
+	* release 5.2.0
+
 2021-08-29 Tada, Tadashi <[e-mail]>
 	* release 5.1.7
 
 2021-05-29 Tada, Tadashi <[e-mail]>
 	* use GitHub Actions for CI instead of TravisCI