AVR Tutorial

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3.1.75
- Fix minor bugs

3.1.0
- Fix landscape mode bug

3.0.0
- infrared automation example is added
- 18b20 temperature sensor IoT (IFTTT) example is added

2.9.0
* Remove storage permission

2.8.0
* Bluetooth LE home automation example is added
* LoRa home automation example is added

2.5.0
* Milliohm meter example is added
* USB-to-MIDI cable example is added