Removed complicated logic for the Endpoint_ConfigureEndpoint() function to use inlined or function called versions depending of if the given bank size is a compile time constant, as the compiler does a better job of optimizing with basic code.

Changed over all device demos to use a clearer algorithm for the configuring of the application's endpoints.

Fix invocations of avr-size in all makefiles broken on unpatched *nix systems, due to the recent update to the latest WinAVR makefile template.

Fix XPLAINBridge project discarding characters from the USB interface due to a double read from the endpoint.

Make XPLAINBridge and USBtoSerial projects more reliable by forcing a flush if the UART-to-USB buffer becomes nearly full.

Reduce locking in the LightweightRingBuffer.h header files by only locking on the update of the buffer count, and require insertions and removals from each buffer to occur in only one execution thread.

Fix CDC_*_ReceiveByte() returning 0 when the interface is not configured, instead of the new -1 error value.

Fix CDC_Host_ReceiveByte() not re-freezing the pipe if no packet has been received.

Remove redundant Pipe token set commands in the CDC and RNDIS host class drivers.

Invert the logic for the VBUS power light in the AVRISP-MKII project for the USBTINY-MKII board target.

Fixed Serial peripheral driver not turning off the USART before reconfiguring it, which would cause incorrect operation to occur (thanks to Bob Paddock).

Oops - fix mixed "initialize" and "initialise" - opt for American spelling due to its wide use in technical standards.

More spell checking of all source files -- correct missed errors, switch to EN-GB spelling dictionary.

Altered the CDC Deivice and Host Class drivers' receive byte routines, so that no data is indicated by a negative return value.

Added auto flushing of OUT data to the CDC Host Class driver's USBTask function to automatically flush the send pipe buffer.

Oops - need to turn off USART via control register B before reconfiguring, fix ordering of USART control register modifications in the Benito and USBtoSerial projects.

Fixed Benito and USBtoSerial projects not turning off the USART before reconfiguring it, which could cause incorrect operation to occur (thanks to Bob Paddock).

Add special support to the AVRISP-MKII for the new model USBTINY-MKII's additional LED to indicate target power source.

Add support to the USBTINY-MKII's additional LED in the board's LED driver header.

Changed LED indicator masks for the AVRISP-MKII project, so that there are defined roles for each LED.

Remove obsolete macros and preprocessor checks from the AVRISP-MKII project's V2Protocol command handler header file.

Added support to the AVRISP-MKII project for ISP speeds slower than 125KHz via a new software SPI driver.

Added new SPI_ORDER_* data order masks to the SPI peripheral driver.

Move over message ID specific header data to unions inside the standard TMC header structure, so that all header data is read in one chunk in the incomplete TMC demo.

Rename reserved members of all structs so that they are uniformly named across all demos/projects/bootloaders.

Added start of the Incomplete TMC demo's command parser code.

Add missing INTERRUPT_CONTROL_ENDPOINT compile time option to the Mass Storage device projects/demos and incomplete Test and Measurement Class demo, which was accidentally removed during the makefile updates.

Alter Test and Measurement Class demo's request handlers to accept, process and correctly return the fields indicated in the specification.

Added periodic flush timer to the Benito project. Alter the serial transmission code so that sent bytes do not block the remainder of the main program code from running.

Future proof the XPROG protocol of the AVRISP-MKII project, so that non PDI and TPI requests return failure.

Update all demos, projects and bootloaders to indent all function parameters, one per line, for better readability.

Add missing const qualifiers to the demos.

Indent core library function parameters so that there is only one parameter per line, to increase readability.

Add new module source variables to the library core makefile, so that module sources can be added to a project's makefile on a per-module rather than per-file basis.

Disable strict aliasing explicitly in the project makefiles, as this is apparently enabled by default in newer AVR-GCC builds, and aliasing is used heavily for type-punning through the LUFA and third party library's codebase.

Removed the automated checking of event names in the demo, project and bootloader makefiles due to inconsistancies between the behaviour of the command line tools used to perform the check on each platform.

Removed the internal endpoint and pipe memory allocation macros, as this is already performed directly in the code. Simplify the endpoint and pipe reset procedure.

Fixed HID device class driver still using PrevReportINBuffer for GetReport control requests even when it has been set to NULL by the user application (thanks to Axel Rohde).

Change AVRISP-MKII and XPLAINBridge descriptors to indicate that the device is bus-powered only. Add compile time options to reduce the compiled size of the firmware.

Remove the timeout period extension code from the AVRISP project, as no single command should ever exceed the maximum timeout period. Extend timeout period to 1 second per command, so that an accidental timeout will never occur.

Rename the AVRISP main source files to AVRISP-MKII so that it matches the project name. Add AVRStudio project file for the AVRISP-MKII project.