This is a re-release of version 0.1.4:
 - Fix Rescue-Prime (PR #25):
    - Add SageMath reference implementation
    - Add compliant Rust implementation RescuePrimeRegular
    - Refactor the Hasher trait and its related traits
    - Deprecate existing RescuePrime implementations
    - Remove several historical implementations
    - Remove IdentityValues trait in favor of Zero, One
    - Rely entirely on precalculated nth roots of unity

This release breaks many interfaces, so a "major" release is warranted.
Following the SemVer-with-a-twist rules for versions that begin with 0,
0.1.5 -> 0.2.0 is a ("left-most non-zero") major release.

https://doc.rust-lang.org/cargo/reference/resolver.html#semver-compatibility

Prior to this release, 0.1.4 was yanked (retracted) from crates.io, and
0.1.5 was released onto crates.io from the tagged commit `v0.1.5`. This
is equivalent to 0.1.3.

This addresses and closes #28.