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.

Changed over the AVR8 USB controller interrupt management macros to be inlined functions instead, for better compile-time validity checking and to keep the per-architecture source files as uniform as possible.

Removed Pipe_ClearErrorFlags(), pipe error flags are now automatically cleared when Pipe_ClearError() is called.

More UC3B architecture porting.

Added TWI baud rate prescaler and bit length parameters to the TWI_Init() function (thanks to Thomas Herlinghaus).

More updates to remove architecture-specific comments from the documentation, alter USBMode.h preprocessor logic to support future architectures more easily.

Start update of documentation to support possible multiple architectures in the future - alter \file documentation to automatically copy in the module documentation where possible.

Initial restructuring of the core USB driver module to support multiple architectures in the future.

Add new ARCH option to the makefiles to (eventually) specify the target device architecture. Update non-usb peripheral drivers to reflect future multiple architecture support.

Added HID class bootloader, compatible with a modified version of the command line Teensy loader from PJRC.com.

Change bootloader makefiles to automatically compute the bootloader starting address from a flash size and bootloader section size, expressed in KB.

Fixed programming errors in the AVRISP-MKII project when the programming packet is a round multiple of the endpoint bank  size under avrdude (thanks to Steffan Woltjer).

Renamed the PRNT_Host_SendString(), CDC_Host_SendString() and CDC_Device_SendString() functions to *_SendData(), and added new versions of the *_SendString() routines that expect a null terminated string instead.

Added new Serial_SendData() function to the Serial driver.

Removed SerialStream module, rolled functionality into the base USART Serial peripheral driver instead through the new Serial_CreateStream() and Serial_CreateBlockingStream() methods.

Renamed the Serial byte send/receive functions to remain consistent with the CDC driver's byte functions.

Altered the serial byte receive function to make it non-blocking.

Add new HID_DESCRIPTOR_VENDOR() macro, change over all projects and Device ClassDriver demos to use it.

Fix reversed byte ordering of multi-byte HID data.

Added support to the HID parser for extended USAGE items that contain the usage page as well as the usage index.

Removed the HID_IOF_NON_VOLATILE and HID_IOF_VOLATILE flags from HID INPUT items where the flag is invalid. Changed over HID OUTPUT items to use HID_IOF_NON_VOLATILE.

Change over MagStripe project to use HID_DESCRIPTOR_KEYBOARD() for its HID report. Change over MouseHostDevice demo to use HID_DESCRIPTOR_MOUSE() for its HID report.

Fixed ReportID not being removed from the feature/out report data array in the HID class driver when Report IDs are used.

Added new MAX() and MIN() convenience macros.

Added new HID_DESCRIPTOR_MOUSE, HID_DESCRIPTOR_KEYBOARD and HID_DESCRIPTOR_JOYSTICK macros for easy automatic creation of  basic USB HID device reports.

Change over Joystick demo HID report descriptor to use USAGE_MINIMUM and USAGE_MAXIMUM when describing the joystick buttons, to allow for easy extension of the number of supported buttons.

Changed AVRISP-MKII project to use the Watchdog interrupt for command timeouts, to reduce CPU usage and free timer 0 for other uses in the future.

Fixed incorrect definition of the HID_KEYBOARD_SC_RIGHT_ARROW constant in the HID class driver (thanks to Joby Taffey).

Add in newHID_KEYBOARD_SC_POWER keyboard scancode constant.

Fixed several functions in the Host mode Still Image Class driver returning an error code from the incorrect error code enum (thanks to Daniel Seibert).

New HID report item macros (with HID_RI_ prefix) to allow for easy creation and editing of HID report descriptors.

Changed over all project and demo HID report descriptors to use the new HID report item macros.

Moved the HIDParser.c source file to the LUFA/Drivers/USB/Class/Common/ directory from the LUFA/Drivers/USB/Class/Host/.

Added new high level TWI packet read/write commands, altered behaviour of the TWI_StartTransmission() function.

Spell check source code files.

Changed TempDataLogger project's DS1307 driver to simplify the function interface and prevent a possible race condition.

Altered all endpoint/pipe stream transfers so that the new BytesProcessed parameter now points to a location where the number of bytes in the transfer that have been completed can be stored (or NULL if entire transaction should be performed in one chunk).

Added new Endpoint_Null_Stream() and Pipe_Null_stream() functions.

Removed the NO_STREAM_CALLBACKS compile time option due to the new partial stream transfer feature replacing it.

Fixed errors in the incomplete Test and Measurement device demo preventing proper operation (thanks to Pavel Plotnikov).

The FAST_STREAM_TRANSFERS compile time option has been removed due to lack of use and low cost/benefit ratio.

Add GCC_FORCE_POINTER_ACCESS() macro use to the RingBuffer library header, to attempt to force GCC into producing more efficient code for manipulating the buffers.

Update Doxygen documentation configuration file for the main project documentation to the latest version. Add missing data structure documentation briefs.