Hello, we produced a small product using teensy and neopixels for development, and now we buy the addressable LED direct from factory. The manufacturer has updated their chip, View attachment WS2812B datasheet V2.1.pdfWS2812B (neopixel) now is V2.1, and the timings changed a bit. Is there any hard modification needed for the library on the teensy 3.2 or LC?