Preparing for next developer iteration, 0.15.1.

Author: dblock

CHANGELOG.md

@@ -1,3 +1,7 @@
+### 0.15.1 (Next)
+
+* Your contribution here.
+
 ### 0.15.0 (2020/7/26)
 
 * [#322](https://github.com/slack-ruby/slack-ruby-client/pull/322): Cache `Faraday::Connection` for persistent adapters - [@drbrain](https://github.com/drbrain).

README.md

@@ -72,7 +72,7 @@ A Ruby client for the Slack [Web](https://api.slack.com/web), [RealTime Messagin
 
 ## Stable Release
 
-You're reading the documentation for the **stale** release of slack-ruby-client, v0.15.0. See [UPGRADING](UPGRADING.md) when upgrading from an older version.
+You're reading the documentation for the **next** release of slack-ruby-client. Please see the documentation for the [last stable release, v0.15.0](https://github.com/slack-ruby/slack-ruby-client/blob/v0.15.0/README.md) unless you're integrating with HEAD. See [UPGRADING](UPGRADING.md) when upgrading from an older version.
 
 ## Installation
 

lib/slack/version.rb

@@ -1,4 +1,4 @@
 # frozen_string_literal: true
 module Slack
-  VERSION = '0.15.0'
+  VERSION = '0.15.1'
 end