teensy-core-4.1

Teensy 4.1 core updated for C++20

PaulStoffregen c4fe5e9303 Fix compiler warning		5 lat temu
.github	Update issue template	7 lat temu
teensy	Remove ancient BYTE define (causes more trouble than it's worth)	6 lat temu
teensy3	Fix compiler warning	5 lat temu
teensy4	Add keylayouts & USB timer defs	5 lat temu
usb_disk	Add define guards to allow compiler flags to change product name/serial number	7 lat temu
usb_flightsim	usb_flightsim changes for XPlaneRefs with names >58 chars	9 lat temu
usb_hid	Add bcdDevice info to help teensy_ports identify models	6 lat temu
usb_midi	Add bcdDevice info to help teensy_ports identify models	6 lat temu
usb_rawhid	Add define guards to allow compiler flags to change product name/serial number	7 lat temu
usb_serial	Add bcdDevice info to help teensy_ports identify models	6 lat temu
usb_serial_hid	Add bcdDevice info to help teensy_ports identify models	6 lat temu
.gitignore	Add more rules to .gitignore	10 lat temu
README.md	Update README.md	9 lat temu
keywords.txt	Add Serial7 & Serial8 keywords, fixes #326	6 lat temu

Teensy 2.0, 3.x, LC core libraries for Arduino.

The latest stable version of Teensy’s core library is always available in the Teensyduino installer, at this page: