0.2.1

Impl more PartialEq and PartialOrd.

0.2.0

1. NumericBuf and Numeric implement the serde::Serialize and serde::Deserialize traits.
2. Fix NumericBinary::nan() and NumericBinary::zero() in big-endian header.

0.1.1

Optimize performance of converting numeric to floating-point number.

0.1.0

Basic numeric structures & methods:

• Numeric & NumericBuf
• parse from string
• impl Rust operators
• convert primitive types from/to numeric.