Prepare messages for v. 6.1.3

messages.json

@@ -29,5 +29,6 @@
   "6.0.3": "messages/6.0.3.rst",
   "6.1.0": "messages/6.1.0.rst",
   "6.1.1": "messages/6.1.1.rst",
-  "6.1.2": "messages/6.1.2.rst"
+  "6.1.2": "messages/6.1.2.rst",
+  "6.1.3": "messages/6.1.3.rst"
 }

messages/6.1.3.rst

@@ -0,0 +1,29 @@
+Version 6.1.3
+=============
+
+Improvements and bug fixes:
+---------------------------
+- Support Clang 9
+- Avoid crashing when expanding an invalid path
+- Allow working with ccache, thanks @maximmenshikov
+- Grammar fixes in docs, thanks @ryanpcmcquen
+
+Support the development!
+------------------------
+💜 this plugin? Please consider buying me a 🍵
+https://github.com/niosus/EasyClangComplete#support-it
+
+Thanks to all the awesome contributors!
+If you add bounties to Bountysource you can support them too!
+https://www.bountysource.com/teams/easyclangcomplete
+
+Become a backer on Open Collective!
+https://opencollective.com/EasyClangComplete#backers
+
+I you use this plugin in a company, push to become a sponsor!
+https://opencollective.com/EasyClangComplete#sponsor
+
+This plugin took a significant amount of effort. It is available and will always
+be available for free, both as freedom and as beer.
+
+If you appreciate it - support it. How much would you say it is worth to you?