update readme.md (#52)

- update readme.md, ESPHome #51, kudos to uTZFu
- add debug example.

Develop (#47)

- add yield() to improve the behaviour under RTOS
- update readme.md (add compatibility table).
- minor edits

update readme.md (#41)

- add badges to readme.md
- minor edits

update examples (#39)

- add example **estimateMidPointAC.ino** #37
- update readme.md (sampling trick #38).
- minor edits.

add autoMidPointDC() (#36)

- add **autoMidPointDC(cycles)** see issue #35
- add rounding to **autoMidPoint()**
- update README.md

fix build (#34)

* fix #33 build
* redo setADC()
* update readme.md

add setADC() (#32)

* add setADC() for external ADC

update GitHub actions (#30)

* update license to 2023
* update GitHub actions

fix #26 DC measurements (#28)

* fix #26 midPoint data type
* fix incrMidpoint

Develop (#25)

* add float mVNoiseLevel(frequency, cycles)
* add void suppressNoise(bool flag) - experimental suppression by averaging two samples.
* add resetMidPoint()
* improve midPoint functions
* add RP2040 pico in build-ci
* update readme.md / comments
* add I2C_display + suppressNoise() example