Package lzx implements a decompressor for the the WIM variant of the LZX compression algorithm.
The LZX algorithm is an earlier variant of LZX DELTA, which is documented at https://msdn.microsoft.com/en-us/library/cc483133(v=exchg.80).aspx.
NewReader returns a new io.ReadCloser that decompresses a WIM LZX stream until uncompressedSize bytes have been returned.
Reader is an interface used by the decompressor to access the input stream. If the provided io.Reader does not implement Reader, then a bufio.Reader is used.