add the ability to the decoder to work with WavPack streams that include full headers, such as those provided by the LAV splitter - these are easy to distinguish from the Matroska-style stripped header versions provided by our splitter because there is no private codec data provided (which, at a minimum, provides the version info required to reconstruct the headers) - this sometimes worked in previous versions of this decoder due to some funny coincidences, but this version should be more consistent
bump micro version