bump 0.3.0

Author: RobTillaart

CHANGELOG.md

@@ -12,8 +12,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - add **float trapezium1(float t)** with duty cycle.
 - add **float trapezium2(float t)** with duty cycle.
 - add **float heartBeat(float t)**
-- add **float freeWave(float t, int16_t arr)** arbitrary wave generator.
-- add **float freeWaveN(float t, int16_t arr, int N)** arbitrary wave generator.
+- add **float freeWave(float t, int16_t arr, int size)** arbitrary wave generator.
 - update **functionGeneratorPerformance.ino**
 - add examples for **freeWave()**
 - fix Arduino-lint.yml (long library name error)