Updating 1.5.7 notes in the readme
Updating 1.5.7 notes in the readme

kcouck/FastLED,ryankenney/FastLED,NicoHood/FastLED,tullo-x86/FastLED,corbinstreehouse/FastLED,eshkrab/FastLED-esp32,liyanage/FastLED,FastLED/FastLED,PaulStoffregen/FastLED,eshkrab/FastLED-esp32,FastLED/FastLED,felixLam/FastLED,MiketheChap/FastLED,wsilverio/FastLED,wsilverio/FastLED,corbinstreehouse/FastLED,felixLam/FastLED,MiketheChap/FastLED,FastLED/FastLED,ryankenney/FastLED,yaneexy/FastLED,liyanage/FastLED,FastLED/FastLED,PaulStoffregen/FastLED,yaneexy/FastLED,NicoHood/FastLED,MattDurr/FastLED,remspoor/FastLED,kcouck/FastLED,MattDurr/FastLED,tullo-x86/FastLED,wilhelmryan/FastLED,neographophobic/FastLED,PaulStoffregen/FastLED,neographophobic/FastLED,remspoor/FastLED,wilhelmryan/FastLED