CHANGELOG.md in logstash-output-sqs-4.0.0 vs CHANGELOG.md in logstash-output-sqs-4.0.1

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+## 4.0.1
+  - Docs: Fix doc generation issue by removing extraneous comments.
+
 ## 4.0.0
   - Add unit and integration tests.
   - Adjust the sample IAM policy in the documentation, removing actions which are not actually required by the plugin. Specifically, the following actions are not required: `sqs:ChangeMessageVisibility`, `sqs:ChangeMessageVisibilityBatch`, `sqs:GetQueueAttributes` and `sqs:ListQueues`.
   - Dynamically adjust the batch message size. SQS allows up to 10 messages to be published in a single batch, however the total size of the batch is limited to 256KiB (see [Limits in Amazon SQS](http://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/limits-messages.html)). This plugin will now dynamically adjust the number of events included in each batch to ensure that the total batch size does not exceed `message_max_size`. Note that any single messages which exceeds the 256KiB size limit will be dropped.
   - Move to the new concurrency model, `:shared`.