Releasing version 6.12.0

CHANGELOG.md

@@ -2,6 +2,15 @@
 
 All notable changes to the LaunchDarkly Python SDK will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [6.12.0] - 2020-02-11
+Note: if you are using the LaunchDarkly Relay Proxy to forward events, update the Relay to version 5.10.0 or later before updating to this Python SDK version.
+
+### Added:
+- The SDK now periodically sends diagnostic data to LaunchDarkly, describing the version and configuration of the SDK, the architecture and version of the runtime platform, and performance statistics. No credentials, hostnames, or other identifiable values are included. This behavior can be disabled with the `diagnostic_opt_out` option or configured with `diagnostic_recording_interval`.
+
+### Fixed:
+- The SDK now specifies a uniquely identifiable request header when sending events to LaunchDarkly to ensure that events are only processed once, even if the SDK sends them two times due to a failed initial attempt.
+
 ## [6.11.3] - 2019-12-30
 ### Fixed:
 - In rare circumstances (depending on the exact data in the flag configuration, the flag's salt value, and the user properties), a percentage rollout could fail and return a default value, logging the error "variation/rollout object with no variation or rollout". This would happen if the user's hashed value fell exactly at the end of the last "bucket" (the last variation defined in the rollout). This has been fixed so that the user will get the last variation.

ldclient/version.py

@@ -1 +1 @@
-VERSION = "6.11.3"
+VERSION = "6.12.0"