Update documentations (#6694)

sdk/eventhub/azure-eventhubs/HISTORY.md

@@ -8,11 +8,12 @@
     - This batch object can then be used in the `send()` method to send all the added events to Event Hubs.
     - This allows publishers to build batches without the possibility of encountering the error around the message size exceeding the supported limit when sending events.
     - It also allows publishers with bandwidth concerns to control the size of each batch published.
-- Added new configuration parameters for exponential delay among each retry operation.
+- Added new configuration parameters for exponential delay between retry operations.
     - `retry_total`: The total number of attempts to redo the failed operation.
     - `backoff_factor`: The delay time factor.
     - `backoff_max`: The maximum delay time in total.
 - Added support for context manager on `EventHubClient`.
+- Added new error type `OperationTimeoutError` for send operation.
 - Introduced a new class `EventProcessor` which replaces the older concept of [Event Processor Host](https://docs.microsoft.com/en-us/azure/event-hubs/event-hubs-event-processor-host). This early preview is intended to allow users to test the new design using a single instance of `EventProcessor`. The ability to checkpoints to a durable store will be added in future updates.
     - `EventProcessor`: EventProcessor creates and runs consumers for all partitions of the eventhub.
     - `PartitionManager`: PartitionManager defines the interface for getting/claiming ownerships of partitions and updating checkpoints.
@@ -21,6 +22,7 @@
 
 **Breaking changes**
 
+- `EventProcessorHost` was replaced by `EventProcessor`, please read the new features for details.
 - Replaced `max_retries` configuration parameter of the EventHubClient with `retry_total`.
 
 
@@ -178,4 +180,6 @@ Version 5.0.0b1 is a preview of our efforts to create a client library that is u
 
 ## 0.2.0a1 (unreleased)
 
-- Swapped out Proton dependency for uAMQP.
+- Swapped out Proton dependency for uAMQP.
+
+![Impressions](https://azure-sdk-impressions.azurewebsites.net/api/impressions/azure-sdk-for-python/sdk/eventhub/azure-eventhubs/HISTORY.png)

sdk/eventhub/azure-eventhubs/README.md

@@ -304,4 +304,6 @@ This project welcomes contributions and suggestions.  Most contributions require
 When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.
 
 This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
-For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [[email protected]](mailto:[email protected]) with any additional questions or comments.
+For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [[email protected]](mailto:[email protected]) with any additional questions or comments.
+
+![Impressions](https://azure-sdk-impressions.azurewebsites.net/api/impressions/azure-sdk-for-python/sdk/eventhub/azure-eventhubs/README.png)