dec 0.2.0

A decimal arithmetic library providing high-level, safe bindings to libdecnumber.
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# Changelog

All notable changes to this crate will be documented in this file.

The format is based on [Keep a Changelog], and this crate adheres to [Semantic
Versioning].

## Unreleased

* Add the `OrderedDecimal` wrapper type to imbue `Decimal64` and `Decimal128`
  with implementations of `Ord` and `Hash`, akin to
  `ordered_float::OrderedFloat`. The order used is that of the underlying type's
  `partial_cmp`, except that NaNs are considered equal to themselves and sort
  greater than all other values.

* Remove the `Ord` and `Eq` implementations from `Decimal64` and `Decimal128`,
  which used `total_cmp`'s order.

* Change the `PartialCmp` and `PartialEq` implementations of `Decimal64` and
  `Decimal128` to use the semantics of `Context::<D>::partial_cmp` rather than
  `D::total_cmp`. This is analogous to the behavior of the primitive `f32` and
  `f64` types.

* Add associated constants for zero, one, and NaN to each floating-point decimal
  type. The full list of added constants is:

  * `Decimal32::ZERO`
  * `Decimal32::ONE`
  * `Decimal32::NAN`
  * `Decimal64::ZERO`
  * `Decimal64::ONE`
  * `Decimal64::NAN`
  * `Decimal128::ZERO`
  * `Decimal128::ONE`
  * `Decimal128::NAN`

* Remove the `Decimal32::zero`, `Decimal64::zero`, and `Decimal128::zero`
  methods. Use either the `ZERO` associated constant or the `Default`
  implementation instead.

* Mark `Decimal32::from_ne_bytes`, `Decimal64::from_ne_bytes`, and
  `Decimal128::from_ne_bytes` as `const fn`s.

* Add `std::iter::Sum` and `std::iter::Product` implementations for `Decimal64`
  and `Decimal128`.

## 0.1.2 - 2020-02-01

* Correct documentation links in README, again.

## 0.1.1 - 2020-02-01

* Correct documentation links in README.
* Implement `Hash` for the `Class`, `Rounding` and `Status` types.
* Include fields in `fmt::Debug` output for `Status`.

## 0.1.0 - 2020-01-31

Initial release.

[Keep a Changelog]: https://keepachangelog.com/en/1.0.0/
[Semantic Versioning]: https://semver.org/spec/v2.0.0.html