Bump major version to 1 and update CHANGELOG

Author: sfirrin

CHANGELOG.md

@@ -4,7 +4,8 @@
 
 - Defaults the DD_ENHANCED_METRICS option to `true`
 - If DD_ENHANCED_METRICS is enabled, always writes enhanced metrics to stdout
-- Note: if you previously had DD_ENHANCED_METRICS=true and did not set DD_FLUSH_TO_LOG=true, the enhanced metrics will no longer be submitted to Datadog synchonously; the metrics will now be written to logs. If you already have a Datadog Forwarder Lambda configured, that will read the enhanced metrics logs and submit the metrics asynchronously. If you do not have a Datadog Forwarder set up, you'll need to create one to get enhanced metrics into your Datadog account. See [Datadog Forwarder Lambda setup instructions](https://github.com/DataDog/datadog-serverless-functions/tree/master/aws/logs_monitoring).
+- Breaking change: if you previously set the env var DD_ENHANCED_METRICS=true and did not set DD_FLUSH_TO_LOG=true, the enhanced metrics will no longer be submitted to Datadog synchronously; the metrics will now be written to logs. If you already have a Datadog Forwarder Lambda configured, that will read the enhanced metrics logs and submit the metrics asynchronously. If you do not have a Datadog Forwarder set up, you'll need to create one to get enhanced metrics into your Datadog account. See [Datadog Forwarder Lambda setup instructions](https://github.com/DataDog/datadog-serverless-functions/tree/master/aws/logs_monitoring).
+- Because of the breaking change above, we've bumped the major package version so that this release is version 1.12.0. We've set the minor version to 12 so that the minor version of our package stays in alignment with the version of the layer we're releasing.
 
 # Version 11 / 2019-12-06
 

datadog_lambda/__init__.py

@@ -1,6 +1,6 @@
 # The minor version corresponds to the Lambda layer version.
 # E.g.,, version 0.5.0 gets packaged into layer version 5.
-__version__ = "0.12.0"
+__version__ = "1.12.0"
 
 
 import os