# Functions
Is detects whether the input stream is compressed.
ReadCloser reads uncompressed input data from the io.ReadCloser and returns an io.ReadCloser from which compressed data may be read.
ReadCloserLevel reads uncompressed input data from the io.ReadCloser and returns an io.ReadCloser from which compressed data may be read.
UnzipReadCloser reads compressed input data from the io.ReadCloser and returns an io.ReadCloser from which uncompressed data may be read.
# Variables
MagicHeader is the start of zstd files.