Preparing for next developer iteration, 0.12.3.

Author: dblock

CHANGELOG.md

@@ -1,5 +1,9 @@
 ### Changelog
 
+#### 0.12.3 (Next)
+
+* Your contribution here.
+
 #### 0.12.2 (2020/7/26)
 
 * [#120](https://github.com/slack-ruby/slack-ruby-bot-server/pull/120): Removed GIFs - [@dblock](https://github.com/dblock).

README.md

@@ -40,7 +40,7 @@ A library that contains a [Grape](http://github.com/ruby-grape/grape) API servin
 
 ### Stable Release
 
-You're reading the documentation for the **stable** release of slack-ruby-bot-server, v0.12.2. See [UPGRADING](UPGRADING.md) when upgrading from an older version.
+You're reading the documentation for the **next** release of slack-ruby-bot-server. Please see the documentation for the [last stable release, v0.12.2](https://github.com/slack-ruby/slack-ruby-bot-server/blob/v0.12.2/README.md) unless you're integrating with HEAD. See [UPGRADING](UPGRADING.md) when upgrading from an older version.
 
 ### Try Me
 

lib/slack-ruby-bot-server/version.rb

@@ -1,3 +1,3 @@
 module SlackRubyBotServer
-  VERSION = '0.12.2'.freeze
+  VERSION = '0.12.3'.freeze
 end