* <b>Fixed:</b>
* - Core:
* - Fixed device class driver pipe configuration routines returning success with a partially constructed instance
* when a pipe configuration failed (thanks to Helge Suess)
* - Fixed incorrect LED driver definitions for the Arduino Leonardo board (thanks to Zoltán Szőke)
* - Fixed incorrect XMEGA DFLL reference frequency (thanks to Martin Aakerberg)
* <b>Fixed:</b>
* - Core:
* - Fixed device class driver pipe configuration routines returning success with a partially constructed instance
* when a pipe configuration failed (thanks to Helge Suess)
* - Fixed incorrect LED driver definitions for the Arduino Leonardo board (thanks to Zoltán Szőke)
* - Fixed incorrect XMEGA DFLL reference frequency (thanks to Martin Aakerberg)