espressif/led_strip

## 1.0.0

- Initial driver version, based on the legacy RMT driver (`driver/rmt.h`)

## 2.0.0

- Reimplemented the driver using the new RMT driver (`driver/rmt_tx.h`)

## 2.1.0

- Support DMA feature, which offloads the CPU by a lot when it comes to drive a bunch of LEDs
- Support various RMT clock sources
- Acquire and release the power management lock before and after each refresh
- New driver flag: `invert_out` which can invert the led control signal by hardware

## 2.2.0

- Support for 4 components RGBW leds (SK6812):
  - in led_strip_config_t new fields
      led_pixel_format, controlling byte format (LED_PIXEL_FORMAT_GRB, LED_PIXEL_FORMAT_GRBW)
      led_model, used to configure bit timing (LED_MODEL_WS2812, LED_MODEL_SK6812)
  - new API led_strip_set_pixel_rgbw
  - new interface type set_pixel_rgbw