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* Support for I2C displays and supporting switches to enable/disable the display.
* Initial supported display: ssd1327 (Ex: Adafruit 4741)
* Renamed ``main.py`` to ``routine.py`` to avoid issues with having two files opened named ``main.py`` in Thonny IDE.
* Swap default values for ``WATER_SENSOR_HIGH`` and ``WATER_SENSOR_LOW`` to better match physical orientation of the board.