fix: #35 duplicate changelog to project root

Dependabot reads project's Changelog to inform what's changed in a dependency

CHANGELOG.md

@@ -0,0 +1,78 @@
+# HISTORY 
+
+## May 16th
+
+**0.9.3**
+
+* **Tracer**: Bugfix - Runtime Error for nested sync due to incorrect loop usage
+
+## May 14th
+
+**0.9.2**
+
+* **Tracer**: Bugfix - aiohttp lazy import so it's not a hard dependency
+
+## 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 metric unit casting logic if one passes plain string (value or key)
+* **Metrics: **Fix `MetricUnit` enum values for
+    - `BytesPerSecond`
+    - `KilobytesPerSecond`
+    - `MegabytesPerSecond`
+    - `GigabytesPerSecond`
+    - `TerabytesPerSecond`
+    - `BitsPerSecond`
+    - `KilobitsPerSecond`
+    - `MegabitsPerSecond`
+    - `GigabitsPerSecond`
+    - `TerabitsPerSecond`
+    - `CountPerSecond`
+
+## April 24th
+
+**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**
+
+* **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**
+
+* **Logger**: Fix `log_metrics` decorator logic not calling the decorated function, and exception handling
+
+## April 8th, 2020
+
+**0.6.1**
+
+* **Metrics**: Introduces Metrics middleware to utilise CloudWatch Embedded Metric Format
+* **Metrics**: Adds deprecation warning for `log_metrics`
+
+## February 20th, 2020
+
+**0.5.0**
+
+* **Logger**: Introduces log sampling for debug - Thanks to [Danilo's contribution](https://github.com/awslabs/aws-lambda-powertools/pull/7)
+
+## November 15th, 2019 
+
+* Public beta release