prepare 0.15.0 release (#79)

* prepare 0.15.0 release

---------

Co-authored-by: Ryan <ryan.hall@datadoghq.com>

Author: andrewqian2001datadog

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.15.0
+- Provide a configuration option to delete kubernetes and docker attributes from the log after the relevant information has been extracted into tags [#78](https://github.com/DataDog/fluent-plugin-datadog/pull/78) by [@sambart19].
+- Fix launch.json and update readme [#76](https://github.com/DataDog/fluent-plugin-datadog/pull/76)
+- Add custom headers support [#69](https://github.com/DataDog/fluent-plugin-datadog/pull/69)
+  
 ## 0.14.4
 - Source `container_id` tag from kubernetes meta location [#67](https://github.com/DataDog/fluent-plugin-datadog/pull/67) by [@rlafferty](https://github.com/rlafferty)
 

lib/fluent/plugin/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module DatadogFluentPlugin
-  VERSION = '0.14.4'
+  VERSION = '0.15.0'
 end