Added parameter directions to function parameter documentation.

Added new experimental FAST_STREAM_FUNCTIONS compile time option to speed up stream transfers at the expense of a higher FLASH consumption (needs testing to verify improved throughput).

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

Fixed PREVENT ALLOW MEDIUM REMOVAL command issuing in the MassStorageHost demo using incorrect parameters (thanks to Mike Alex).

Fixed MassStorageHost demo broken due to an incorrect if statement test in MassStore_GetReturnedStatus().

Fixed incorrect HID interface class and subclass values in the Mouse and KeyboardMouse demos (thanks to Brian Dickman).

Capitolised the "Descriptor_Search" and "Descriptor_Search_Comp" prefixes of the values in the DSearch_Return_ErrorCodes_t and DSearch_Comp_Return_ErrorCodes_t enums.

Minor documentation improvements.

More documentation changes for better module-level documentation rather than file-level documentation.

Renamed Serial_Stream driver to SerialStream to remain consistent with the rest of the library's naming scheme for files.