Added USE_INTERNAL_SERIAL compile time option to automatically read out the internal unique serial number as the device's serial number descriptor on supported AVR models.

Extend USB_GetDeviceConfigDescriptor() routine to require the configuration number within the device to fetch, to add support for multi-configuration devices.

Added new USB_Host_ClearPipeStall() convenience function to clear a stall condition on an attached device's endpoint.

Added new USB_Host_GetDeviceDescriptor() convenience function to retrieve the attached device's Device descriptor.

Make Pipe_ConfigurePipe() mask the given endpoint number against PIPE_EPNUM_MASK to ensure the endpoint IN direction bit is cleared to prevent endpoint type corruption.

Fix documentation mentioning Pipe_GetCurrentToken() function when real name is Pipe_GetPipeToken().

Change MIDI demos to use real MIDI command values, and shift for the USB wrapper, rather than shift for the MIDI bytes. This is a little confusing for the MIDI USB wrapper, but allows for the use of real standardized MIDI command values.

Added new USB_Host_SetDeviceConfiguration() convenience function. Change over Low Level host demos to use the new routine.

Changed per-device controller preprocessor checks over to per-device series for better device control.

Fixed error in Endpoint.c using HSOFI rather than SOFI for counting elapsed milliseconds.

Deleted Host ClassDriver demos -- not yet started, faster to rebase new ClassDriver demos from the newly schedulerless LowLevel host demos rather than re-convert each demo from the previous scheduler-based implementations.

Fixes to MassStorageHost demo to improve compatibility with more USB drives.

MIDI device demo no longer blocks if a note change event is sent while the endpoint is not ready.

Converted Host mode demos to schedulerless. Fixed host mode broken due to earlier Start-of-frame event experiments.

Added Doxygen documentation to the Audio class driver. Added new modules for each of the new device class drivers to the library documentation.

Redocumented all device demos, now that they have changed over to the new USB class drivers.

Added C linkage to class drivers for C++ support.

Added prefixes to most of the class driver constants to prevent name clashes.

Removed new Start of Frame event from the library; performance suffered far too much and it was only useful in one of the standard classes (HID). Altered HID demos to use the previous method of tracking millisecond periods via a hardware timer rather than the SOF events.

Fixed MIDI class driver blocking on unread events to the host.

Commit of new class abstraction APIs for all device demos other than the MIDI demo - not documented yet.

Removed scheduler and memory allocation libraries.

Added new EVENT_USB_StartOfFrame event in the library to indicate the start of each USB frame (when generated).

Removed Tx interrupt from the USBtoSerial demo; now sends characters via polling to ensure more time for the Rx interrupt.

Change USBtoSerial Tx to polling-driven rather than interrupt driven, to ensure more time for the Rx interrupt to be serviced.

Moved out each demos' functionality library files (e.g. Ring Buffer library) to /Lib directories for a better directory structure.

Deleted StdDescriptors.c, renamed USB_GetDescriptor() to CALLBACK_USB_GetDescriptor, moved ConfigDescriptor.c/.h from the LUFA/Drivers/USB/Class/ directory to LUFA/Drivers/USB/HighLevel/ in preperation for the new USB class APIs.

USB_IsConnected is now cleared before the USB_Disconnect() event is fired in response to VBUS being removed.

Minor documentation improvements.

Fixed incorrect ENDPOINT_EPNUM_MASK mask preventing endpoints above EP3 from being selected (thanks to Jonathan Oakley).

Removed STREAM_CALLBACK() macro - callbacks now use regular function definitions to clarify user code.

Removed DESCRIPTOR_COMPARATOR() macro - comparators should now use regular function definitions to clarify user code.

Create a new function pointer type in StreamCallbacks.h for endpoint/pipe stream callbacks, to make stream function prototypes clearer.

Fix to previous patch (make CDCHost demo deallocate pipes when an invalid CDC interface is skipped).

Remove the saving of the USB_GetNextDescriptorComp() return value in all host demos, since it went unused anyway; replaced with a simple check against the success error code for clarity.

Fixed CDCHost not clearing configured endpoints and resetting configured endpoints mask when a partially enumerated invalid CDC interface is skipped.

Removed all user pipe/endpoint interrupt APIs, added internal library support for interrupt driven control endpoints when in device mode by defining INTERRUPT_CONTROL_ENDPOINT token and passing it to the compiler via the -D switch.

Fixed Device Mode not handling Set Feature and Clear Feature Chapter 9 requests that are addressed to the device (thanks to Brian Dickman).

Fixed Mouse and Keyboard device demos not acting in accordance with the HID specification for idle periods (thanks to Brian Dickman).

Removed support for endpoint/pipe non-control interrupts; these did not act in the way users expected, and had many subtle issues.

Fixed RNDISEthernet not working under Linux due to Linux requiring an "optional" request which was unhandled.

Fixed bug in RNDISEthernet and DualCDC demos not using the correct USB_ControlRequest structure for control request data.

Fixed documentation showing incorrect USB mode support on the supported AVRs list.

Init function of the Serial driver is now static inline to product smaller code for the common-case of static init.

Changed HWB board driver to Buttons driver, to allow for the support of future boards with more than one mounted GPIO button.

Fixed missing semicolon in the ATAVRUSBRF01 LED board driver code, changed LED board driver code to define dummy LED masks for the first four board LEDs so that user code can be compiled for boards with less than four LEDs without code modifications (thanks to Morten Lund).