chore: clean up history changes

Author: heitorlessa

Diff for: python/HISTORY.md

@@ -2,42 +2,52 @@
 
 ## May 12th
 
+**0.9.0**
+
 * **Tracer**: Support for async functions in `Tracer` via `capture_method` decorator
 * **Tracer**: Support for `aiohttp` via `aiohttp_trace_config` trace config
 * **Tracer**: Support for patching specific modules via `patch_modules` param
 * **Tracer**: Document escape hatch mechanisms via `tracer.provider`
 
+## May 1st
+
+**0.8.1**
+
+* **Metrics**: Fix incorrect metric units enum values for `*PerSecond` e.g. CountPerSecond
+
 ## April 24th
 
-* Introduces `Logger` for stuctured logging as a replacement for `logger_setup`
-* Introduces `Logger.inject_lambda_context` decorator as a replacement for `logger_inject_lambda_context`
-* Raise `DeprecationWarning` exception for both `logger_setup`, `logger_inject_lambda_context`
+**0.8.0**
+
+* **Logger**: Introduces `Logger` class for stuctured logging as a replacement for `logger_setup`
+* **Logger**: Introduces `Logger.inject_lambda_context` decorator as a replacement for `logger_inject_lambda_context`
+* **Logger**: Raise `DeprecationWarning` exception for both `logger_setup`, `logger_inject_lambda_context`
 
 ## April 20th, 2020
 
 **0.7.0**
 
-* Introduces Middleware Factory to build your own middleware
-* Fixes Metrics dimensions not being included correctly in EMF
+* **Middleware factory**: Introduces Middleware Factory to build your own middleware via `lambda_handler_decorator`
+* **Metrics**: Fixes metrics dimensions not being included correctly in EMF
 
 ## April 9th, 2020
 
 **0.6.3**
 
-* Fix `log_metrics` decorator logic not calling the decorated function, and exception handling
+* **Logger**: Fix `log_metrics` decorator logic not calling the decorated function, and exception handling
 
 ## April 8th, 2020
 
 **0.6.1**
 
-* Introduces Metrics middleware to utilise CloudWatch Embedded Metric Format
-* Adds deprecation warning for `log_metrics`
+* **Metrics**: Introduces Metrics middleware to utilise CloudWatch Embedded Metric Format
+* **Metrics**: Adds deprecation warning for `log_metrics`
 
 ## February 20th, 2020
 
 **0.5.0**
 
-* Introduces log sampling for debug - Thanks to [Danilo's contribution](https://github.com/awslabs/aws-lambda-powertools/pull/7)
+* **Logger**: Introduces log sampling for debug - Thanks to [Danilo's contribution](https://github.com/awslabs/aws-lambda-powertools/pull/7)
 
 ## November 15th, 2019