OptDir-0.1.0: ChangeLog.md

# Changelog for `OptDir`

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

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to the
[Haskell Package Versioning Policy](https://pvp.haskell.org/).

## 0.1.0.0

* Drop support for `hashable <1.2`
* Add `NFData` instance