Replace all calls and references to _delay_ms() in the code with the architecture-agnostic Delay_MS() function.

Improve code generation for the Delay_MS() function on the AVR8 architecture when called with a constant input.

Remove use of avr-libc specific ATOMIC_BLOCK, replace with a new per-architecture set of inline functions to retrieve and manipulate the global interrupt enable bit for each architecture.

Add in documentation for the USB controller common interrupt routine which must be linked to the interrupt controller in the user application on the AVR32 UC3 architecture.

Renamed all low level Endpoint_Read_*, Endpoint_Write_* and Endpoint_Discard_* functions to use the number of bits instead of a symbolic size (Byte, Word, DWord) so that the function names are applicable and correct across all architectures.

Renamed all low level Pipe_Read_*, Pipe_Write_* and Pipe_Discard_* functions to use the number of bits instead of a symbolic size (Byte, Word, DWord) so that the function names are applicable and correct across all architectures.

Conditionally add available address spaces to the address space enum, for multiple address space architectures.

Update Doxygen configuration file for the latest Doxygen release.

Minor documentation updates.

Add in new architecture attribute defines to selectively remove the EEPROM and FLASH memory space functions on architectures which do not have seperate memory address spaces.

Oops - Bootloader optimizations to GetDescriptor() don't work, as the Configuration Descriptor's header does not contain the full length of the descriptor, breaking full enumeration.

Fixed Remote Wakeup broken on the AVRs due to the mechanism only operating when the SUSPI bit is set (thanks to Holger Steinhaus).

Remove redundant setting of UIDE in the AVR8 and AVR32 USB controller drivers.

Add named macros to the board joystick drivers where a shift is needed to maintain unique joystick direction bits in the returned mask value.

Implemented on-demand PLL clock generation for the U4, U6 and U7 series USB AVRs when automatic PLL mode is specified.

Updated the software USART code in the XPLAIN Bridge application so that the incomming bits are sampled at their mid-point instead of starting point, to give maximum reliability (thanks to Anton).

Add support for the inbuilt unique serial numbers in the UC3A3 and UC3A4 models.

Remove UC3B temp macros related to EEPROM, to ensure that projects requiring this break at compile time rather than at runtime until a solution can be found.

Fix Doxygen documentation, broken due to the added ATTR_PACKED attribute on some structs breaking the Doxygen parser.

Simplify AVR32 UC3B software FIFO, as it will only ever be accessed a byte at a time to prevent data alignment issues.

Add structure padding to the appropriate descriptor structures to maintain correct alignments on larger architectures.

Fix EVK1101 swapped joystick Right/Down masks.

Fix UC3B architecture compile errors and ensure the architecture can be compiled with no special makefile tokens defined.

Endpoint_ResetFIFO() renamed to Endpoint_ResetEndpoint(), to be consistent with the Pipe_ResetPipe() function name.

Fix undefined error in Pipe_UC3B.h.

Add missing migration notes.

Add software FIFOs to the UC3B pipe control interfaces, to match the endpoint control interfaces. Fix incorrect endianness for the Endpoint/Pipe read and write routines.

Porting updates for the UC3B architecture - get UC3B partially enumerating using a modified mouse demo on the EVK1101. Implement a software FIFO for the endpoint banks; datasheet hints that this can be done through hardware as on the AVR8 architecture, but the correct method to do this not discovered yet.

Fixed Still Image Host class driver exiting the descriptor search routine prematurely if the data pipes (but not event pipe) is found.

Fixed missing call to Pipe_SetInfiniteINRequests() in the Pipe_ConfigurePipe() routine.

Add in USB_INT_RegisterHandlers() internal function to register the interrupt handler routines used by LUFA. Add dummy loads after clearing the interrupt lines according to the datasheet.

Add in temporary global interrupts enable/disable macros.

Add code to start the USBB Generic Clock from the user-specified master clock source (OSCx or PLLx) in the AVR32 UC3B core USB driver.