Introduced inital "CHANGELOG.md" file.

Author: bogdanarduino

CHANGELOG.md

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+# Changes 📝
+
+## 🆕 New Features
+- Introduces support for reading common Human Interface Devices (HIDs) like USB mice and keyboards
+- Implements a number of example sketches to illustrate how to successfully interface with USB HIDs
+
+## ⚠️ Known Issues
+- Compatibility with advanced mice and keyboards (offering multimedia buttons and visual effects) is limited or unkown
+- Reading the scroll wheel input from mice is not supported with this initial release
+- Only allows for connecting one keyboard and mouse
+
+Please refer to the [Arduino Docs Website](https://docs.arduino.cc) for detailed information on these changes and how to use the new features.