
Tested on ESP32 (240 MHz)
IDE 1.18

FLETCHER_LIB_VERSION: 0.1.3

Fletcher32_performance
randomtime: 6945
     total: 9275
 1e4 x add: 2330
  checksum: 430995902


FLETCHER_LIB_VERSION: 0.1.4

Fletcher32_performance   (old method)
randomtime: 6945
     total: 9274
 1e4 x add: 2329
  checksum: 886350356   (as we add random values this happens).

Fletcher32_performance  (optimized modulo)
randomtime: 6947
     total: 8577
 1e4 x add: 1630
  checksum: 233217780
