Changelog for bencoding-0.4.0.1

* 0.1.0.0: Initial version. * 0.2.0.0: Added default decoders/encoders using GHC Generics. * 0.2.2.0: Arbitrary length integers. (by specification) * 0.3.0.0: Rename BEncode to BValue and BEncodable to BEncode. * 0.4.0.0: Faster dictionary conversion. * 0.4.0.1: Nothing changed.