Add submission # 6275

#6275

Author: ArduinoBot

registry.txt

@@ -8112,3 +8112,4 @@ https://github.com/JimKnowler/Arduino_Waldo.git|Contributed|Waldo
 https://github.com/RobTillaart/74HC590.git|Contributed|74HC590
 https://github.com/tttapa/Control-Surface.git|Contributed|Control Surface
 https://github.com/crystalfontz/Arduino_CFA039A0-N-V_Library.git|Contributed|Crystalfontz CFA039A0-N-V Library
+https://github.com/koendv/curveFitting.git|Contributed|curveFitting