teensy-core-4.1

Teensy 4.1 core updated for C++20

PaulStoffregen 59a7b221fa Fix delay when yield longer than 1ms		9 lat temu
teensy	Fix duplicate definition in German keyboard layout (Teensy 2.0)	10 lat temu
teensy3	Fix delay when yield longer than 1ms	9 lat temu
usb_disk	Initial commit, version 1.17-rc1	12 lat temu
usb_flightsim	usb_flightsim changes for XPlaneRefs with names >58 chars	10 lat temu
usb_hid	Initial commit, version 1.17-rc1	12 lat temu
usb_midi	Fix Teensy 2.0 USB MIDI compile error on Arduino 1.6.0	10 lat temu
usb_rawhid	Fix RawHID on Teensy 2.0	10 lat temu
usb_serial	Add availableForWrite() on Teensy 2.0	10 lat temu
usb_serial_hid	Initial commit, version 1.17-rc1	12 lat temu
.gitignore	Add more rules to .gitignore	11 lat temu
README.md	Update README.md	10 lat temu
keywords.txt	Add custom keywords.txt	10 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: