NTC_Thermistor v.2.1.1

What's Changed
Added a preprocessor directive in #20

NTC_Thermistor v.2.1.0

Update for more accurate ESP32

NTC_Thermistor v.2.0.3

Fixed bugs

NTC_Thermistor v.2.0.2

• optimized code;
• updated examples;
• updated documentation.

NTC_Thermistor v.2.0.1

Added new classes:

• Thermistor - thermistor interface;
• AverageThermistor - to average the temperature;
• SmoothThermistor - to smooth the temperature.

Fixed bugs.

Not compatible with previous versions.

NTC_Thermistor v.1.1.4

• Removed deprecated init() method;
• Replaced pinMode from INPUT_PULLUP to INPUT.

NTC_Thermistor v.1.1.3

Fixed bug in setReadingsNumber() method.