generic-ec-core 0.2.0

Core traits of `generic-ec` crate
Documentation
## v0.2.0
* Change `IntegerEncoding` trait [#34]
* Add `Reduce` trait [#34]
* Remove hash to curve API [#34]

[#34]: https://github.com/dfns/generic-ec/pull/34

## v0.1.4
* Add `Additive::double` [#29]

[#29]: https://github.com/dfns/generic-ec/pull/29

## v0.1.3

All changes prior to this version weren't documented