to allow WebUSB development, provide a way to change the USB_VERSION reported
using an additional core.
The additional (webUSB) core will survive IDE and AVR core updates
In an excess of confidence, these defines were added to Leonardo's variant.h
3rd party boards sometimes avoid inheriting this variant but they still define USBCON, thus breaking the build
This allows detecting when the USB host sends a break request and what
the value of the request was. See the comments in USBAPI.h for details.
This just modifies the avr core, not the sam core.
Made some helper class for files filtering.
platforms.txt now contains only one platform at a time.
Some cleanup in Compiler and AvrDudeUploader classes.
Martino Facchin
Nico
Cristian Maglie
Matthijs Kooijman
Cristian Maglie