teensy-core-4.1

Teensy 4.1 core updated for C++20

Vēsture

John Robinson 20c3d93b92 move source under core/ directory - adds a "namespace" for each header - makes clear where a header is expected to come from - better facilitates explicit includes		pirms 4 gadiem
..
atomic.h	move source under core/ directory	pirms 4 gadiem
crc16.h	move source under core/ directory	pirms 4 gadiem
delay.h	move source under core/ directory	pirms 4 gadiem
parity.h	move source under core/ directory	pirms 4 gadiem