* Fix dead link to USB keycodes doc
Link was dead and the fresher version I could find on usb.org is still older than this one.
Thus, WaybackMachine seems the best option.
* Fix dead link to USB keycodes doc, with 2 options
Give the WaybackMachine link (fresher and for reference of the content of the original link) and the usb.org one (older)
/*
* Keycodes based on HID Usage Keyboard/Keypad Page(0x07) plus special codes
- * http://www.usb.org/developers/devclass_docs/Hut1_12.pdf
+ * https://web.archive.org/web/20060218214400/http://www.usb.org/developers/devclass_docs/Hut1_12.pdf
+ * or http://www.usb.org/developers/hidpage/Hut1_12v2.pdf (older)
*/
#ifndef KEYCODE_H
#define KEYCODE_H