Yogg-Saron

Added

• Initial support for Serde serializer and deserializer.
• Efficient bytes serialization with Serde.
• Efficient binaries deserialization with Serde using ByteBuf.
• Rust serialize Decoder now can provide the underlying reader both by reference or by value, destroying itself in the last case.

Changed

• Update well-formness for BigEndianRead trait to be implemented only for sized types.
• Renamed PositiveFixnum marker to FixPos.
• Renamed NegativeFixnum marker to FixNeg.
• Renamed FixedString marker to FixStr.
• Renamed FixedArray marker to FixArray.
• Renamed FixedMap to FixMap.
• Minor documentation updates and markdown fixes.